________ you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can．

A．Now that

B．Ever since

C．So that

D．As long as

Before the first non stop flight made in 1949, it ________ necessary for all planes to land for refueling．

A．would be

B．has been

C．had been

D．would have been

Students who pass the test will be ________ to the next grade, as has been announced．

A．possessed

B．promoted

C．proposed

D．allowed

When choosing a product, I sometimes try to figure out the meaning ________ to its brand name．

A．attaching

B．having attached

C．to attach

D．attached

There is hardly an environment on earth ________ some species of animal or other have not adapted successfully．

A．to which

B．in which

C．for which

D．on which

－I don’t feel like going out．Why don’t we just stay home and watch TV instead?

－________ You promised to take me out for dinner and to the theatre on my birthday．

A．Great!

B．Why me!

C．Come on!

D．Not at all!

Jack is making up his mind to get a ticket for the concert ________ it means standing in a queue all night．

A．as if

B．even if

C．in case

D．as long as

－Why were you not at the concert?

－I ________ a close game between two European football teams．

A．watched

B．had watched

C．was watching

D．have been watching

In a sports team each player has a clear role, and there are few occasions ________ members are confused or uncertain of their roles．

A．when

B．where

C．why

D．how

Many people say they have seen Unidentified Flying Objects, which they believe ________ alien spaceships．

A．are

B．is

C．have

D．as