【推荐1】He smiled politely ________ Lucy apologized for her drunken friends.

A．though

B．as

C．unless

D．how

【推荐2】It was a nice meal，________a little expensive.

A．though	B．whether
C．as	D．since

【推荐3】The girl had hardly rung the bell       the door was opened suddenly, and her friend rushed out to greet her.

A．before

B．until

C．as

D．since

【推荐2】We all need to get involved in saving energy ________ it's at work, at home, or at school.

A．unless

B．once

C．whether

D．because

【推荐1】I’ll lend you my car _________ you return it on time.

A．so far as

B．as long as

C．unless

D．until

【推荐2】The sports meeting had to be postponed _______ the following day because of the bad weather.

A．since

B．when

C．until

D．after

【推荐3】—How long will it be________ the professor makes another visit to China?
—It all depends.

A．until

B．before

C．since

D．when

【推荐1】What an unforgettable experience! I’ll write it down _______ it is still fresh in my memory.

A．since

B．after

C．while

D．until

【推荐2】Disappointed, I was about to leave ________ something occurred, which ________ my attention.

A．while, paid

B．when, attracted

C．before, drew

D．and, got

【推荐3】_______ many Brits like nothing better than spending their Sunday cutting the grass, some are happy just to sit under the branches of the tree and enjoy the beauty of the world around them.

A．When

B．Like

C．As

D．While