问题

Bob promises to join in the football match ________ hehas to help his parents on the farm.

A:if
B: as
C:unless
D:when

正确答案是：

同类题型

There ____________ too much homework for us to do today .

This machine is very easy ________ . Anybody can learn to use it in a few minutes.

My new secretary was very quick; she________ a lot of work in one morning.

It’s reported that nearly150,000 people lost their lives in Asian tsunamis(海啸).　　—Yes, ______ news cameas _____ shock to me.

The long talk was_____ and all of us were _____ of it. [ ]