_________ advertisements are of great help, I don’t think we should entirely rely on them.
A.Since | B.While | C.Because | D.As |
They were surprised that a child should work out the problem____ they themselves could not.
A.once | B.unless | C.while | D.if |
Mary and I have been close friends ______ we met each other 10 years ago.
A.when | B.since | C.until | D.as |
Every evening after dinner, _____ tired from work, I will spend some time reading.
A.unless | B.if | C.until | D.when |
I think you should complain, _____, of course, you are happy with the way things are.
A.until | B.although | C.when | D.unless |
This approach, ______ more expensive than the basic one, provides us with considerably more usage flexibility.
A.as | B.since | C.while | D.if |
—You won’t go to Kathy’s wedding party, will you?
—Yes, invited.
A.though | B.if | C.unless | D.as |
Mrs Green was so pleased ____ her daughter won the first place in the singing competition.
A.as | B.that | C.when | D.if |
--- I think George doesn't really care for TV plays.
--- Right, ____ he still watches the program.
A.and | B.so | C.but | D.for |
_____ he thought he was helping us with the work, he was actually in the way.
A.Since | B.When | C.Because | D.If |