You have a very large table that your users access frequently. Which of the following advisors will recommend any indexes to improve the performance of queries against this table？（）

A.Our company is very larg

B.Our company specializes in flood-proof development

C.Our company is located in Beijing

-Have you had a good day？

-Yes，but I'm very tired.

A. Right

B. Wrong

()you have said is very important to us.

A、 What

B、 That

C、Whose

A、have gone

B、have been gone

C、be gone

D、be going

A.A. Yes, you have

B.B. It’s very interesting

C.C. This is my girl friend

D.D. Yes, of course

A. I haven' t eaten all day.

B: You _____be very hungry.

A. should

B. must

C. have to

Student A: Thanks a lot for what you have done for me. You've been very thoughtful.

Student B: ______.

A.achieve

B.have achieved

C.achieving

D.achieves

but you ________ it.

A) mustn’t have done B) wouldn’t have done

C) mightn’t have done D) didn’tave to do

You look very tired. You ____ too hard these days.

A. could have worked

B. ought to have worked

C. should have worked

D. must have worked

A.satisfy with

B.satisfied with

C.satisfied at

D.satisfactory