Some exercises appear to be ______ ones you have done, but on ______ second thoughts, you’ll find that they’re different.
| A．/; the | B．the; / | C．the; a | D．/; / |
______surprises most of us.
| A．Wolves are afraid of us | B．The fact that wolves afraid men |
| C．The fact that wolves are afraid of men | D．Wolves’ afraid of men |
I haven’t decided _____ hotel to stay at.
| A．which | B．what | C．at which | D．where |
. The thief had himself _____ by the police when he was trying to break into the hotel.
| A．to spot | B．to be spotted | C．spotted | D．being spotted |
The reason was _____ I was busy with my work at that time.
| A．why | B．because of | C．that | D．what |
. The problem is _____ will go.
| A．that | B．when | C．who | D．whoever |