I have got a headache –No wonder You ___in front of thatcomputer too long

I hear that your good friend David ____________ books about history.— Yes, but now he ____________ novels.

Because of the financial crisis, the total amount of export has ______ 40% in the first quarter of the year. [ ]

This piece of music ____ him ____one of the most popular singers.

Do you have anything more ______, sir?— No. You can have a rest or do something else.[ ]