你想知道Mike今天下午是否有空,你会问:A. How are you, Mike? B. What are you doing, Mike?C. Are you free this afternoon, Mike?
()There is one _____ the floor. A.inB. onC. of
()I _______yesterday. A.boughtB. buy C. buys
()There are twenty _____in the class. A.child B. childs C. children
()Please _____the crayons. A.give up B. give out C. give in
()There are only nineteen ____ . A.crayons B. crayonC. crayons