Use the sound, calendar expression or governing verb.
Review a and an before the next word’s sound, at/on/in in specified calendar expressions, and the base verb after can.
The count records matching answers on six selected grammar items. It is not a writing grade, percentile or CEFR level. Every explanation and this full guide are available whether your count is zero, partial or perfect.
Small words depend on a local construction
The two article items request an indefinite first mention, so the task is choosing a or an rather than inventing a shared reference that would justify the. The sound of the next word matters, including an adjective before the noun. Time items ask for conventional prepositions with a clock time, day or month. The modal item fixes can and asks for its following verb form.
Listen to the word after the article
Compare a useful tool with an unusual tool. Both nouns are tool, and both adjectives begin with the letter u, yet their first sounds differ. Useful begins with /j/, while unusual begins with a vowel sound. The contrast is about pronunciation rather than a rule that one written vowel always requires an. These new phrases illustrate the rule without adding scored vocabulary items.
Read the unit of time before choosing
A bare clock label, a named day and a month without a date are different calendar expressions. In this set, at, on and in match those three structures respectively. Do not turn that short mapping into a rule for every time phrase: deadlines, durations, holidays and regional expressions can need other choices. After can, inspect the base verb rather than adding to or a third-person ending.
Make one controlled contrast
Choose one missed rule. For an article, keep the noun and change its preceding adjective, then explain the sound difference. For time, write a month, day and exact clock time in three separate sentences. For can, change only the subject and check that the following base verb stays the same. Verify your examples with a grammar reference after drafting, without assuming the pattern covers every exception.
Six selected choices cannot establish complete command
Function words carry meaning across many constructions beyond these items. A matching answer does not demonstrate that you can select every article, preposition or modal in spontaneous writing. The count is not vocabulary size, language level or a measure of native-like usage. Both interfaces preserve the same English stimuli, but translated instructions may affect the experience; measurement equivalence has not been established.