Difficulties are nothing _____we are not afraid of them.
—He didn’t finish his homework, did he?— . He will finish it in an hour.A、No, he didn’t B、Yes, he did C、Yes, he didn’t
—Do you know when back?—I don’t know. But if he back, I will call you.A、will he come, comes B、he will come, comesC、he comes, will come
—Hello! Could I speak to Mrs Brown?—Sorry. She the supermarket.A、has been to B、went to C、has gone to
Seeing believing.
The scientist has had a research weather for more than 30 years.