________ the grandparents love the children, they are strict with them.
| A．While | B．As |
| C．Since | D．Because |
The manager listened to the customers’ complaints attentively with great patience, ________ to miss any point.
| A．not trying | B．trying not | C．to try not | D．not to try |
Much as he ________ he has a good command of English, he sometimes feels it hard to find an appropriate version for some Chinese idioms.
| A．announces | B．declares | C．claims | D．confirms |
--You should have thanked her before you left.
--I meant ________, but when I was leaving I couldn’t find her anywhere.
| A．to do | B．to | C．doing | D．doing so |
Many people are ________ as to what to do when there is a fire.
| A．at a loss | B．at risk | C．at ease | D．at a distance |
Girls used to take fewer advanced math courses than boys but now they are taking just _______.
| A．as much | B．so much | C．as many | D．so many |