填空，使用括号中的动词的正确肯定形式。
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任务 1 / 10
The English lesson (start) at 8:45 AM.
任务 2 / 10
Students (write) many essays during the year.
任务 3 / 10
I (understand) this mathematical formula now.
任务 4 / 10
He (learn) new 词汇 very quickly.
任务 5 / 10
We (study) history twice a week.
任务 6 / 10
The teacher (explain) the 语法 rules clearly.
任务 7 / 10
The school library (open) early in the morning.
任务 8 / 10
They usually (pass) all their exams.
任务 9 / 10
She (know) the answer to every question.
任务 10 / 10
We (take) our final tests in June.