________ doing his experiment, he forgot to pick up his wife from the station.

A. Absorbed in      B. Absorbed to    C. Absorbing in     D. Absorbing to

Only then did I realize that it was foolish to ___ my friends and never contact them.

A. break away from    B. catch up with  C. look away from   D. put up with

After a day’s hard work, Mary went to the nearby shop to _____ herself to a strawberry ice cream.

A. satisfy    B. treat       C. provide     D. offer

Prices ______ all the time. It's no wonder that we've spent so much money recently.

A. rose      B. had risen       C. were rising      D. have been rising

There’s no way of knowing why one man makes an important discovery __ _ another man, also intelligent, fails.

A. since B. if   C. as   D. while

The doctor will see you again next week. _____, you must rest as much as possible.

A. Somehow    B. However       C. Meanwhile       D. Indeed

Of all the books on the shelf,         is of any use for improving our practical skills of survival in the competitive world.

A. nothing  B. no one  C. neither  D. none

—How was your recent trip to England?

—I’ve never had ______ one before.

A. the most pleasant B. a more pleasant

C. a most pleasant D. a pleasant

When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.

A. origin    B. nationality     C. generation       D. relation

In ____ accident _____ knowledge of first aid can make _____ real difference.

A. an; a; a  B. the; a; the  C. an; the; 不填    D. a; a; 不填