He was speaking so fast_____

单选题 He was speaking so fast______ we could hardly follow him.

A． what
B． as
C． but
D． that

【答案】D。解析：考查so…that…结构。句意为“他说得很快以至于我们很难跟上”。

1 If you need more information, please contact us______telephone or e-mail.

A． in
B． on
C． by
D． for

2some students are able to find employment after graduation, others will have to return to school and earn an advanced degree. ______

A． Since
B． If
C． Because
D． While

3in the company for three years, Mark has become experienced in business negotiations. ______

A． Having worked
B． Have been worked
C． Have worked
D． Worked