. The doorway is low, so ____ your head when you go in.
This event not only raised _______ of world hunger, but also raised lots of money to help starving children.
____________ you may be right, I can’t altogether agree.
The emergency required that all the tasks _____ at least two days ahead of time. A.to complete B.should complete C.be completed Dshould have been completed
When first ______to Britain, tea was not so popular like today.
---It’s the second time that I ___ to Shanghai. ---What great changes! It’s ten years since I _____ it last time.