2019年mpacc考试英语真题——连词1049

{01}___ he came to study in the university, he has made much progress in the study of English.

A.While

B.When

C.Since

D.After

解析：略
本题选C。
{02}You will find friendly people ___ you go in China.

A.where

B.and

C.wherever

D.so

解析：略
本题选C。
{03}It is not until recently ______ the scientists have found proof of there being water on Mars.

A.when

B.that

C.how

D.what

解析：略
本题选B。