________ in his papers, he didn’t notice my coming.

[　　]

 --Each of the students, working hard at their lessons, ________ the book.

 --So have I.

[　　]

 --My boss often made me work long hours a day without rest.

 --If I ________ you, I ________ the job.

[　　]

A．am; will give up

B．had been; would have given up

C．were; would give up

D．had been; would give up

 --Here’s a new pair of shoes for you.

 --Thank you, but there’s no need ________ a new pair for me.

[　　]

There were lots of people standing watching, yet none of them ________.

[　　]

A．offered to help

B．offered helping

C．was offered to help

D．was offering help

Students shouldn’t be given so difficult a problem ________ they can not work out.

[　　]

--What are you busy doing these days, Mary?

--________ the final examinations.

[　　]

A．To make preparations for

B．Preparing myself for

C．To prepare myself for

D．Myself preparing

We finally bought several books by Shakespeare, ________ is one.

[　　]

It’s ________ age-old question: Are we alone in ________ universe?

[　　]

 Isn’t that Ann’s husband over there?

 No, it ________ be him—I’m sure he doesn’t wear glasses.

[　　]