一. 选择填空
1. Don’t be angry with him. He made the mistake_______.
A. in common B. in a hurry C. by accident D. on purpose
2. -- Who______ it be that is knocking at the door?
-- It ______ be Father, but I’m not sure.
A. can; must B. can; may C. must; can D. may; must
1. Don’t be angry with him. He made the mistake_______.
A. in common B. in a hurry C. by accident D. on purpose
2. -- Who______ it be that is knocking at the door?
-- It ______ be Father, but I’m not sure.
A. can; must B. can; may C. must; can D. may; must