【题目】There is no simple answer, _____ is often the case in science.
A.as
B.that
C.when
D.where

【题目】If you are a traveler without a guide leading the way, you need to _________ a guide book for details of your journey.
A.refer to
B.stick to
C.lead to
D.add to

【题目】It's good to know _____ the dogs will be well cared for while we're away.
A.what
B.whose
C.which
D.that

【题目】This house is so big and beautiful. I think the rent must be _________as the other one.
A.three times as more
B.three times as much
C.as much three times
D.as three times more

【题目】I stopped the car ____ a short break as I was feeling tired.
A.take
B.taking
C.to take
D.taken

A. burstB. urge

C. prioritizeD. defend

【题目】_________I have to give a speech, I get extremely nervous before I start.
A.Whatever
B.Whenever
C.Whoever
D.However

【题目】This journal is widely _________among teenagers in our country.
A.spread
B.circulated
C.circled
D.expands

【题目】— Oh no! We're too late. The train _______.
— That's Ok. We’ll catch the next train to London.
A.was leaving
B.had left
C.has left
D.has been leaving