2019年mpacc考试英语真题——连词850

{01}The old man asked Lucy to move to another chair__________he wanted to sit next to his wife.

A.although

B.unless

C.because

D.if

解析：略
本题选C。
{02}He is good at maths and it won’t be long ____ he works out the problem.

A.since

B.until

C.before

D.when

解析：略
本题选C。
{03}Mary made coffee___________her guests were finishing their meal
A so that    B although   C while    D as if
解析：略
本题选C。