Potatoes turn green when ________ to light.
A. exposed B. are exposed
C. being exposed D. to be exposed
— Hello, can I speak to Mr. Black?
— Sorry, madam. He _________ a lecture in the hall.
A. will give B. gives C. is giving D. has given
The invention of the Internet has ________ a lot to the development of the world.
A. turned B. contributed
C. constructed D. exposed
Frank doesn’t speak Chinese so ______ as Harry.
A. better B. wellC. good D. wonderful
Though _______ time, he managed to finish the task on time.
A. lacked B. lack of C. lackingD. lacking for
In my opinion, what he told us just now about it simply doesn’t make any _______.
A. thought B. ideaC. sense D. point
