—You seem tired, David.—Yes. I _____ all day long and can’t wait to go to bed now.
#102886
A
am working
B
had been working
C
have been working
D
was working
推荐题目
— Are you still busy?— Yes, I _______________ my work, and it won’t take long.
#101461
A
just finish
B
am just finishing
C
have just finished
D
am just going to finish
The mother many things to get her daughter a good education.
#101177
A
purchase
B
produce
C
sacrifice
D
store
After Jack had sent some e-mails, he _______ working on his project.
#102159
A
had started
B
has started
C
started
D
starts
Scientific experiments __________ by students without the teachers’ instructions can be dangerous.
#103839
A
carry out
B
carrying out
C
carried out
D
carrying
The teacher told us that light ______ faster than sound.
#103618
A
traveled
B
had traveled
C
is traveling
D
travels