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?
