Why hasn't he come? ______on time, we will have to put off the trip.

A． If he doesn't come

B． If he won't come

C． If he shouldn't come

D． If he hadn't come

[单选题]10． My father is very busy． He hasn't had a day______ for two months．A．onB．offC．inD．at

[单选题]I'm afraid there's a slight problem with my room－my bed hasn't been made ye

[问答题]He'll come if it doesn't rain tomorrow.

[单选题]We will come here on time at your______.A． requestB． demandC． pleadD． command

[单选题]BythetimehearrivesinBeijing,we___________herefortwodays.A)willhavestayedB)shallstayC)havebeenstayingD)havestayed

[单选题]C．ome earlier next time; ______ you'll be punished.A． unlessB． untilC． otherwiseD． meanwhile

[单选题]Peter wondered why he didn't have many friends. The reason was he was alway

[单选题]Peter wondered why he didn't have many friends. The reason was he was alway

[单选题]Peter wondered why he didn't have many friends. The reason was he was alway

[单选题]Peter wondered why he didn't have many friends. The reason was he was alway