The teacher, as well as his students_______ to attend the party last week.

These young trees must        .

--What about the pen you bought yesterday.
-- It       well. I like it very much.

In some places trees ______ to stop the wind from blowing the earth away.
A. will plant  B. planted  C. are planted

She was seen ____ the theatre at that moment.

Our classroom _____ every day, so it’s very clean.

People in Korea _______bow when they meet for the first time.

Paul doesn’t have to be made  _______ . He always works hard.

--When _____ the abacus _____?   -- In the sixth century by the Chinese people.

While he            the bus, he             a book.