分层限时跟踪练
Ⅰ.单句语法填空
1．The conference to be held in Beijing is of great significance(significant)．
2．The agency will make travel arrangement for you，or alternatively(alternative)，you can organize your own transport.
3．It is reasonable to_assume(assume)that the economy will continue to improve.
4．Would you mind not interrupting(interrupt)with questions all the time?
5．You will be_arrested(arrest) for drunken driving!
Ⅱ.单句改错
