2019年mpacc考试英语真题——连词1021

{01}Try the new cleaner. Just a few minutes every day－that’s all it takes－_________ you could have shining floors and furniture.

A.but

B.and

C.or

D.so

解析：略
本题选B。
{02}Students can easily fall behind in their studies ____ they don’t manage their spare time carefully.

A.though

B.if

C.since

D.until

解析：略
本题选B。
{03}He is very old,____ he still works very hard.    

A.but

B.if

C.when

D.as

解析：略
本题选A。