Ladies and gentlemen，please fasten your seat belts．The plane ．A．takes offB

题型：不详难度：来源：

Ladies and gentlemen，please fasten your seat belts．The plane ．

A．takes off	B．took off
C．is taking off	D．has taken off

答案

解析

考查将来时态。用现在进行时表示按照计划将要发生的事情。一般现在时表示按照飞机场，车站时刻表的安排要发生的事情。故C正确。

举一反三

My little son used to drink a lot of fruit juice but these days he mineral water．

A．prefers

B．is preferring

C．preferred

D．had preferred

题型：不详难度：| 查看答案

Months ago we sailed ten thousand miles across this open sea，which the Pacific，and we met no storm．

A．was called	B．is called
C．had been called	D．has been called

题型：不详难度：| 查看答案

It long before we the result of the experiment．

A．will not be；will know	B．is；will know
C．will not be；know	D．is; know

题型：不详难度：| 查看答案

－Have you known Dr Jackson for a long time?
－Yes，since she the Chinese Society．

A．has joined

B．joins

C．had joined

D．joined

题型：不详难度：| 查看答案

If the weather had been better，we could have had a picnic．But it all day．

A．rained

B．rains

C．has rained

D．is raining

题型：不详难度：| 查看答案