题目内容

We should wash our hands _____ we eat.

A. when
B. while
C. before
D. after

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The Spring Festival is on the way.Many shops have___ huge posters with the word “"sales”".

A. put up
B. put on
C. put out
D. put off

--________will your mother come back? -- In two days.

A. How often
B. How soon
C. How long
D. How far

--Dongdong, _ toy car is that? --It’s _.

A. Who’s ; hers
B. Whose; mine
C. Whose; her
D. Who’s; my

Hurry up, __ you will miss the first train.

A. and
B. then
C. but
D. or