Jack is always 　　　 to wait for a long time without getting angry.

          A. too patient                                B. patient enough

          C. enough patient                           D. very patient

You’d better fix the machine 　　　 I have told you. Otherwise, you may make more problems.

          A. like              B. with           C. as                D. follow

Checking your answers before handing in your paper can help you 　　　 mistakes.

          A. make                B. provide        C. avoid             D. advise

— Sir, please put out your cigarette (香烟).

            — Sorry. I 　　　 the sign.

          A. don’t notice                              B. didn’t notice

          C. haven’t noticed                          D. won’t notice

Jim always keeps the tap running 　　　 he finishes washing his face.

          A. since              B. while         C. as                  D. till

 — Boy, didn’t you see people were waiting in line? Don’t 　　　 in!

            — I am sorry, sir.

          A. push                  B. pull           C. put                   D. carry

 I have spent 　　　 on this job. I think I can finish it 　　　 this afternoon.

          A. sometime; sometime       

          B. sometimes; some time

          C. some time; sometime    

          D. some times; some time

The 　　　 of new inventions should be to make life easier, not to make it harder.

          A. rules                                         B. subjects   

          C. secrets                                         D. purposes

 — Excuse me, sir. But you’re 　　　 my way.

            — Sorry. I didn’t know you were passing by.

          A. on                  B. by          C. with                D. in

Which of the following signs can you often see beside a lake?

A. B. C. D.