We often talk about our childhood 　　  we spent more time boating and fishing.

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

Look, the door is open. Somebody 　　  here earlier than we.

A. must get   B. can get　　    C. must have got　　  D. should have got

Many visitors are amazed to see the hotel that 　　  the green hills around.

　　 A. break into　　　　    B. fits into　　  C. takes into　　   D. looks into

—I have our tickets

—That's good, I was afraid that you　　   them.

　　  A. had forgotten　　  B. forget　　  C. have forgotten   D. are forgetting

—What do you think about Edward?

—He's smarter than　　  in his class.

　　  A. anyone else　　　　   B. others　　　　 C. anyone　　    D. all other

—Did the medicine make you feel better?

—No.　　   , the worse I feel.

　　 A. When I take more medicine　　　　　　　　　　  B. The more medicine I take

　　 C. Taking more medicine　　　　　　　　　　　　   D. More medicine taken

You　　  to the meeting if you have something important to do.

　　 A. must come　　  B. need come　　　　 C. don't have to come　　 D. won't come

Stressful environments lead to unhappy behaviors, which 　　 increase the risk of heart disease.

　　 A. in turn　　　　   B. by turn　　　　   C. in return　　　　 D. for short

—Was the driving pleasant when you vacationed in Mexico last summer?

—No, it 　　   for four days when we arrived, so the roads were very muddy.

   A. was raining　　　　　　 B. would be raining

   C. had been raining　　　　 D. have rained

Einstein lived the rest of his life quietly in America and 　　  American nationality in 1940.

   A. took　　　　 B. took part in　　 C. joined　　　　　　　　   D. bought