【推荐1】Eric arrived on time, ______ it was the rush hour.

A．although	B．because
C．while	D．unless

【推荐2】The fish will die very soon, _________   you put it in the water right now.

A．though

B．because

C．unless

D．while

【推荐3】—We can’t get on or off a bus ________ it is moving.
—You’re right.

A．unless

B．before

C．while

D．until

【推荐1】— Why are you so late today?
— Three buses went by without stopping while I _______ at the bus stop.

A．am waiting

B．waiting

C．have waited

D．was waiting

【推荐2】—Has Tina finished her painting yet?
—I guess not. She ________ on it when I walked past her room.

A．has worked

B．worked

C．is working

D．was working

【推荐3】When Tom came in, his mother ________ dinner.

A．cooks

B．cooked

C．was cooking

【推荐1】—What was your mother doing at this time last night?
—She was reading ________ I was doing my homework.

A．until

B．after

C．while

【推荐2】Read the sentences “A true friend can see the pain in your eyes while everyone else believes the smile on your face” and “Lucy held her head up like a queen while Bill was telling his tale”. The underlined word “while” can help ________.

A．compare and contrast; show time	B．show time; compare and contrast
C．give an example; add more information	D．show cause and effect; show time

【推荐3】________ John was watching sports on TV, his wife was cooking.

A．As

B．As soon as

C．While

D．Until