He made a mistake, but then he corrected the situation ________ it got worse.
A. until B. when C. before D. as
Was it during the Spring Break_______ you went on a trip to Suzhou?
A. when B. that C. in which D. then
A Belgian French-language daily has released _______ is thought to be Europe's first 3D newspaper —complete with cardboard viewing glasses.
A. which B. where C. that D. what
--- You ________ have bothered doing the washing-up. I could manage it myself.
--- That’s OK, No problem.
A. wouldn’t B. mustn’t C. needn’t D. couldn’t
Is it normal that in September hotels near universities are overcrowded, _____ many parents from a distance nowhere to stay but to sleep on the playground ?
A. to leave B. left C. leaving D. leave
The group of research workers are said to ________ to the dangerous nuclear radiation while they carried out their rescue task.
A. be exposed B. have been exposed C. exposed D. be exposing
