—Did you enjoy your holiday?
—Yes, it’s the best holiday I these years.
| A．had | B．have had | C．had had | D．would have |
I can think of many cases ______ students obviously knew a lot of English words and expressions but couldn't write a good essay.
| A．why | B．which | C．as | D．where |
---I'm sorry I stepped outside for a smoke. I was very tired.
---There is no ______ for this while you are on duty.
| A．reason | B．excuse | C．cause | D．explanation |
.It ______ to me that I should pay a visit to my friend Jane next week.
| A．happened | B．supposed | C．proved | D．occurred |
Public attention at the moment is ______ on the problem of how to create
opportunities for the laid-off workers.
| A．focused | B．paid | C．attracted | D．concerned |
.His conclusion, ______ on careful research, was acceptable.
| A．to base | B．to be based | C．basing | D．based |