People usually can get sufficient _________ of the calcium their bodies need from the food they consume.

     A. variety                      B. source                       C. amount                     D. number

The two countries have reached an agreement through dialogues described as ________.

     A. productive                B. unproductive            C. productivity              D. counterproductive

We went away on holiday last week, but it rained _________ .

     A. every other day        B. every single day       C. every two days         D. every second day

Long lost his job _________ no fault of his own.

     A. through                    B. by                             C. with                          D. over

Is he guilty or innocent ________ the crime?

     A. in                              B. from                         C. of                              D. by

Check the bottles carefully to make sure they have not been ________

     A. broken into               B. taken out                  C. touched up               D. tampered with

He tries to _____ himself with everyone by paying them compliments.

     A. gratify                      B. please                       C. ingratiate                  D. commend

Dinosaurs are thought to ________millions of years ago.

     A. die out                      B. have died out           C. having died out        D. dying out

Your hair needs __________. You’d better have it done tomorrow

     A. to cut                        B. being cut                  C. cutting                      D. cut

While I ____________ in the street, I saw my old friend.

     A. was walking             B. am walking               C. walk                          D. walked