________ is often the case, we have worked out the production plan.

　 A. Which　　　　 B. When　　　　 　 C. What　　　　　 D. As

At that time I felt _______（背叛）for her letting our my secret.

Who do you think the teacher will ______ the question?

A. have answer　 B. have answered　 C. have to answer　　 D. has answered

--How long ___________ each other before they__________ married?

--For about a year.

A. have they known;get　　　　　 B. did they know; were going to get

C. do they know;are going to get　　 D. had they known; got

We haven’t discussed yet ______ we are going to place our new furniture.（ ）

A. that　　 B. which　　 C. what　 D. where

I won't tell the student the answer to the math problem until he ____on it for more than an hour.
   A. has been working            B. will have worked
   C. will have been working        D. had worked

My demand is that the information referred to in my report _______ to Mr. Brown without delay.（ ）

A. to be e-mailed　　 B. e-mailed　　 C. be e-mailed　 D. being e-mailed

I got caught in the rain and my suit ____.

A. has ruined　 B. had ruined C. has been ruined D. had been ruined

It was in New Zealand ___ Elizabeth first met Mr. Smith.

A. that　　　　　 B. how　　　　　 C. which　　　　　 D. when

This book will show the readers ___ can be used in other contexts. 
A. how that they have observed      B. that how they have observed 
C. how what they have observed      D. that they have observed