Only when __________________ permission _______________ allowed to enter the lab

Only when __________________ permission _______________ allowed to enter the lab

题型:不详难度:来源:
Only when __________________ permission _______________ allowed to enter the lab.
A.a teacher has given; are the studentsB.has a teacher given; are the students.
C.has a teacher given; the students areD.a teacher has given; the students are

答案
A
解析
only 引导的状语从句放句首时,主句要倒装。
举一反三
She doesn"t know _________________ made her daughter so sad this morning.
A.what was itB.why it was that
C.how that wasD.what it was that

题型:不详难度:| 查看答案
She made a suggestion that the plan ______________ as soon as possible.
A. be carried out                B was carried out
C. should carry out              D. would be carried out
题型:不详难度:| 查看答案
This book can be of help to ________ wants to do the job.
A.whoB.whoeverC.no matter whoD.whomever

题型:不详难度:| 查看答案
I wish I ___________ the star last night.
A.sawB.were to seeC.had seenD.did see

题型:不详难度:| 查看答案
Usain Bolt,         best runner,ran       fastest in         last race in  the 2008 Olympic Games.
A./;/;the    B.the;/;/    C.the;/;the   D·the;the;/
题型:不详难度:| 查看答案
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