—What a thick fog! I went the wrong way at the corner and finally got lost.
— It's easy to make a wrong turn here even under an ideal weather________.
A. conversation B. conclusion
C. condition D. communication
The gate of the factory should be wider. It is ________for two cars to go through.
A. too wide B. wide enough
C. not too wide D. not wide enough。
—It’s clever _____you to help me work out the difficult math problem. Thanks!
—You are welcome. Now it’s easier ________ you to understand it.
A. of； of B. of； for
C. for； of D. for； for
You can’t wear shoes inside this place. It ________.
A. doesn’t allow B. isn’t allowed
C. hasn’t allowed D. wasn’t allowed
— When did you become a volunteer? — I ________in this group since 2008.
A. joined B. took part
C. have joined D. have been
—Is Doctor Green ________ ORBIS doctor?
—No， he is ________UNICEF volunteer. But he sometimes works with ORBIS.
A. a； an B. an； a C. an； an D. a； a
