2019年mpacc考试英语真题——连词744

{01}—Why didn’t apologize to her?
—She drove away_______I could say a word.

A.before

B.after

C.until

D.unless

解析：略
本题选A。

{02}.
________ being very convenient to shoppers, plastic bags also cause serious white pollution.

A.Because

B.Since

C.While

D.If

解析：略
本题选C。