He didn’t make____clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |
．The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
| A．what | B．which | C．that | D．though |
He has ______ little education that he finds it impossible for him to equal ______ important a task.
| A．so ;such | B．such ; so | C．so ;so | D．such ; such |
．China is playing an important role in the world. That’s_______Laura has come to study Chinese.
| A．because | B．why | C．how | D．that |
My friend showed me round the town, was very kind of him.
| A．which | B．that | C．where | D．it |
----How did you find your visit to Mountain Tai, John ?
----- _________.
| A．Oh ,wonderful indeed. | B．I went there alone . |
| C．First by train and then by ship. | D．A guide showed me the way . |