Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University.

When did your father come back from England —__________.

Let’s ________ this weekend.— That’s a good idea.

Her display of bad temper completely _____ the party.

Some special projects are ________ to protect our environment, so we may be _____ to having a clean and beautiful home in the near future