单选题：She looks sad. Could you please tell me ____ that prevents ..

题目内容：

She looks sad. Could you please tell me ____ that prevents her from being as happy as before?A．what it isB．it is whatC．how it isD．it is how

参考答案：

Knowing how long the test would last, the students who finis..

Knowing how long the test would last, the students who finished ____ back and waited until the end of the exam.A．settleB．settledC．settlingD．to settle

分类：状语从句题型：单选题

Do you know the man _______? A．whom I spoke B．to who spoke C．I spoke to D．that I spoke

分类：状语从句题型：单选题

The news______is spreading around the airport is______ a heavy storm is coming.A．what; /B．that; thatC．/; thatD．that; which

分类：状语从句题型：单选题

This is ___ book ___ I wrote.A．the only ….whichB．a very…thatC．the only…thatD．the just…which

分类：状语从句题型：单选题

— Have you found your English book? — I am not sure ____ I could have left it.A．whetherB．whatC．whenD．where

分类：状语从句题型：单选题