---Our classmates went to a concert yesterday afternoon. ---What a pity! I my homework.
I don’t know whether you happen_______, but I’m going to study in the U.S.A. this September.A. to be heard B. to be hearingC. to hear D. to have heard
The flu is believed _______ by viruses that like to reproduce in the cells inside the human nose and throat.
We often provide our children with toys,footballs or basketballs, _______ that all children like these things.
The Olympic mascots are the Olympic flame, the fish, the panda, the Tibetan antelope and the swallow, _______ a close group of friends.
I send you 100 dollars today,the rest _______ in a year.