They have not made any decision on ______ they are going to do to deal with the

题型：不详难度：来源：

They have not made any decision on ______ they are going to do to deal with the waste and control pollution.

A．that

B．which

C．if

D．what

答案

解析

略

举一反三

--- Do you know him?
--- Yes, but I can’t remember ________I met him for the first time.
A. where B. what C that D. if

题型：不详难度：| 查看答案

--- Do you know _____ Mr. Black’s address is.
--- He may live at No. 18 or No. 19 of Bridge Street. I"m not sure of _____.

A．what; which

B．where; which

C．where ; what

D．what; where

题型：不详难度：| 查看答案

This old computer must have been of great use to _______ did the scientific research.

A．those

B．when

C．whoever

D．whomever

题型：不详难度：| 查看答案

--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.

A．when

B．why

C．what

D．that

题型：不详难度：| 查看答案

Maria has to baby-sit. That’s______ she can"t come with us.

A．why

B．ho

C．when

D．what

题型：不详难度：| 查看答案