____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.
| A．Having been explained | B．The problem having been explained |
| C．The problem had been explained | D．Although the problem had been explained |
I'll be home late, but please don't stay ____ for me.
| A．up | B．in | C．over | D．on |
---Mary has a very low opinion of George.
---It can' t be any worse than ____ of her.
| A．he | B．his | C．him | D．he does |
--- ____ at the new school?
--- Fine, I've got used to the life there and I've made some friends.
| A．How are you | B．How are you doing |
| C．Are you getting on well | D．How do you do |
To his surprise, his new play well ____ by the public in China, met a cold welcome abroad.
| A．received | B．accepted | C．accepting | D．receiving |
The newly-founded company is faced with lots of trouble, ____ the financial problem ia not the worst.
| A．which | B．of which | C．to whom | D．with which |