----Are you sure that he is able to do the work well?
---- _______ he could give his mind to it.
| A．In case | B．If only | C．On condition that | D．Unless |
John is not good at music, but when ______ es to English, he is the best in the class.
| A．he | B．this | C．it | D．that |
Alan is a careful driver , but he drives ____ of my friends.
A. more carefully B. the most carefully
C. less carefully D
. the least carefully.
Danny _____ hard for long to realize his dream and now he is popular.
| A．works | B．is working | C．has worked | D．worked |
You will find _______ great benefit a puter will be of each time you use it to help you work..
| A．that | B．whether | C．how | D．what |
The speech which he made ______ the project bothered me greatly.
| A．being concerned | B．be concerned | C．concerned | D．concerning |