I have __________ the problem for two hours, but I haven"t __________.[ ]A.
题型:同步题难度:来源:
I have __________ the problem for two hours, but I haven"t __________. |
[ ] |
A. worked on, worked out it B. worked at, worked it out C. worked on, worked it out |
答案
C |
举一反三
Mrs green is out. I have to _____ her baby. |
[ ] |
A. look for B. look up C. look after D. look around |
You must __________ a chance when it comes. |
[ ] |
A. miss B. catches C. take hold of |
A popular book named "Harry Potter" _ last month. |
[ ] |
A. came out B. came in C. came from |
This river __________ dirty in old days. |
[ ] |
A. is used to be B. used to C. used to be |
—Can you ____ a good way to solve the problems? —Sorry, I can"t. But I believe somebody can. |
[ ] |
A. give up B. think over C. come up with |
最新试题
热门考点