It’s the fifth time ______ late this term.

　 A. that you ’ve arrived 　 B. that you arrived

　 C. when you ’ve arrived 　 D. when you arrived

 - -Let me help you prepare dinner, Mom.

-- ________ , but your homework hasn't been done. You'd better finish it first.

A. That's all right　　B. You're welcome　　C. That's very kind of you　　D. I'd love to

It’s the fifth time ______ late this term.

　 A. that you ’ve arrived 　 B. that you arrived

　 C. when you ’ve arrived 　 D. when you arrived

Bob’s doctor suggests 　　　 for a few days.?

A.that he is resting 　　　 B.he rests

C.him to rest　　　　　 D.that he rest

In my opinion， life in the twenty-first century is much easier than　　　　 .?

A.that used to be　　　 B.it is used to ?　　　 C.it was used to 　 D.it used to be