To avoid _________ on how to operate the machine, you should first read the
instructions carefully.
| A．to get confused |
B．getting confused |
C．to get confusing |
D．getting confusing |
Danby left a message with the professor ______ he would call again in the afternoon.
| A．who | B．that | C．as | D．which |
_____ the catastrophe happened that the local government realized the importance of substantial development.
| A．It was until | B．Not until | C．Until | D．It was not until |
—There will be a talk show this time tomorrow．Would you go with me?
—I'm sorry, but I ______ an important meeting．
| A．have attended | B．will be attending |
| C．am about to attend | D．will attend |
______ is known to us all , the old scientist,______ life was hard in the past, still works hard in his eighties.
| A．It; whom | B．As; whom | C．As; whose | D．What; whom |
The ______ flights between the mainland of China and Taiwan will benefit more travelers.
| A．common | B．normal | C．average | D．regular |