The American economy is still in trouble，________ the Chinese economy is beginning to pick up.
| A．when | B．however | C．while | D．therefore |
—Why were you so late for work today?
— __________ to the office was very slow this morning because of the traffic.
| A．Driving | B．I drove |
| C．To drive | D．That I drove |
No one can avoid __________ by advertisements.
| A．to be influenced | B．being influenced |
| C．influencing | D．having influenced |
His mother left for work, __________ any of the dishes prepared for her.
| A．not eating | B．didn't eat |
| C．not having eaten | D．having not eaten |
The lady walked around the shops, __________ an eye out for bargains.
| A．keep | B．kept | C．keeping | D．to keep |
__________ the result of the examination, he went to the teacher's office to ask about it.
| A．Not having informed of | B．Having not informed of |
| C．Not informing of | D．Not having been informed of |