单项选择题
If you get into difficulties, don"t hesitate to （） help...
单项选择题If you get into difficulties, don"t hesitate to （） help.
If I have a good sleep I"ll be （） to work out the probl...
单项选择题If I have a good sleep I"ll be （） to work out the problem.
The football match was （） on account of rain.A．called u...
单项选择题The football match was （） on account of rain.
