【单选题】
They _ on the programme for almost one week before I joined them, and now we on it as no good results have come out so far.
①
had been working; are still working
②
had worked; were still working
③
have worked; were still working
④
have worked; are still working
【单选题】
This book has been in the works so long that I have lost _____of most of the sources found for me by the staff of the library.
【单选题】
One day we all may find it useful to have a(n) _____for sending documents, writing any pictures across the telephone lines.
【单选题】
7. It’s a Chinese superstitious belief that a black cat will bring ______ luck into a household
【单选题】
I haven’t read ____ of his books, but judging from the one I have read I think he’s a very promising writer.
【单选题】
A suitcase with shirt, trousers and shoes __________ stolen from the car.
【单选题】
When I saw the cars crash on the road,a frightened feeling ________ through my mind.
【单选题】
when will the car stop ( )
【单选题】
_______ smart the driverless car is!
【单选题】
It may only be through repeated experiments _______ a baby will come to accept the idea _______ other people can have different views from what he or she has.