A serious study of physics is impossible ______ some knowledge of mathematics.

A. against               B. before              C. beyond            D. without

 It was only after he had read the papers ______ Mr. Gross realized the task before him was extremely difficult to complete.

A when                   B. that                  C. which               D. what

 It may not be a great suggestion. But before ______ is put forward, we’ll make do with it.

A. a good one          B. a better one     C. the best one    D. a best one

 The watch was very good, and he ______ 20 percent down for it.

A. paid                     B. cost                  C. bought             D. spent

 We ______ very early so we packed the night before.

A. leave                   B. had left            C. were leaving    D. have left

 Since nobody gave him any help, he ______ have done the research on his own.

A. can                      B. must                 C. would               D. need

 I got to the office earlier that day, ______ the 7:30 train from Paddington

A. caught                 B. to have caught C. to catch            D. having caught

 When I arrived, Bryan took me to see the house ______ I would be staying.

A. what                     B. when                C. where               D. which

 I was glad to meet Jenny again, ______ I didn't want to spend all day with her.

A. but                       B. and                  C.so                     D. or

 Would you like to ______ with us to the film tonight?

A. come along          B. come off           C. come across    D. come through