The price of the plane tickets in summer are always very ________, so we have to change our plan．

A．low

B．high

C．expensive

D．cheap

Bill said they would have ________ holiday．

A．a two－month

B．two months

C．two－months

D．two month’s

He can’t answer this question, so he wants to ask the teacher ________ help．

A．with

B．in

C．to

D．for

Tomorrow we’ll have an English party．Will you please ________ our English teacher ________?

A．invite; come

B．invite; to come

C．to invite; come

D．to invite; to come

The sports meeting will continue ________ it rains this afternoon．

A．unless

B．since

C．if

D．until

I don’t know if it ________ later．If the rain ________, I will go for a picnic．

A．will stop to rain; stops

B．will stop raining; stops

C．stops to rain; will stop

D．stop raining; will stop

I will go on with the work ________ I come back tomorrow．

A．when

B．as

C．until

D．while

The children wanted to know ________ Canada was like．

A．how

B．what

C．which

D．why

He finds it very difficult ________ work．

A．look for

B．to find

C．find

D．to look for

Call a taxi, ________ you will miss the train．

A．and

B．though

C．because

D．or