________ you are in trouble, you can ask the policeman for help.
A.Whenever B.Whatever C.However
—It's reported that 31 of the brave young men ________ in a big forest fire in Sichuan.
—I don't know who they are, but I know who they are for.
A.had killed B.killed C.were killed
________ can make Mary change her mind. She is a person who never gives up easily.
A.Nothing B.Something C.Anything
Wechat Pay (微信支付) makes our life convenient. We can buy things ________ we don't take any money.
A.because B.so that C.even though
In my opinion, Chinese is ________ any other language in the world because Chinese has the most number of speakers.
A.as important as B.more important than C.the most important
—Jack, let's have a picnic after school.
—Sorry. I have ________ Frank to work on the English report with him.
A.expected B.suggested C.promised