【推荐1】— Who do you think was the greatest inventor?
— Da Vinci was a great inventor ________ he was a pioneer in many areas.

A．because

B．as well as

C．although

D．so that

【推荐2】I went shopping ________the rain.

A．because

B．although

C．in spite of

【推荐3】I’d like to go shopping with you, ________ I’m too busy today.

A．and

B．but

C．because

D．or

【推荐1】I sleep with the window open ________ it’s really cold.

A．because

B．when

C．unless

D．if

【推荐2】My grandpa does exercise in the park every day________ the weather stops him.

A．unless

B．while

C．if

【推荐3】Betty hasn’t got any hobbies ________ you call sleeping a hobby.

A．when

B．because

C．unless

D．until

【推荐1】—Would you like to tell me something new about rubbish sorting in Chengdu?
—Yes. People will be punished ________ they throw the rubbish into correct bins.

A．while

B．unless

C．if

【推荐2】— Hurry up! we won’t get to the airport on time ________we catch a “Didi” car.
— I’m coming.

A．if

B．when

C．unless

D．as soon as

【推荐3】—   It's so late at night, son. For your health, avoid staying up too late________ necessary.
— I know that. But I have to hand in my history project tomorrow morning.

A．when

B．although

C．unless

D．if

【推荐1】My cousin has been learning English _____she was six years old.

A．when

B．since

C．until

D．because

【推荐2】—Do you often use plastic bags?
—Not really. ________ they are very cheap and easy to get, I hardly ever use them.

A．If

B．Though

C．Because

D．When

【推荐3】— Where is the comic book?
— I ________ it to you ________ you were in the reading room yesterday.

A．have brought; because

B．took; if

C．have taken; before

D．brought; when