Where is Zhang Hua? Is he in the classroom now?—He be there, for I saw him in the teachers’ office just now.

How long ago ______ you ______ the English Club? —I ______it since two years ago.

I bought the digital camera two months ago. — You mean that you __________ it for two months.

_ we left the building that I realized how dangerous the situation had been.

A large number of students planting trees now, the number of the students 2000.