2019年mpacc考试英语真题——连词623

{01}We’d better set off，or it will be dark         we know it.

A.before

B.after

C.when

D.until

解析：考查状语从句的连词。语境表示“还不等我们意识到”，用before引导状语从句表示“在……之前”。
本题选A。
{02}____ I agree with most of what you said, I don"t agree with all.

A.Since

B.While

C.As

D.When

解析：While可用作从属相连词，引导一个让步状语从句，意为“尽管、虽然”
本题选B。
{03}_____, experts point out that students can easily fail at starting their business because of a lack of preparations.

A.But

B.However

C.while

D.though

解析：B考查连词和副词近义词辨析。依据句式逗号特点应该用副词。however符合语法用法。
本题选B。