If you ___ stick to the unrealistic approach, the worse result will be waiting for you not far ahead.

Was it in April,1970________China succeeded________sending its first satellite into space?— Yes, that’s right . [ ]

What’s the use of this kind of fuel(燃料) — It can make the train __________ fast.

I____her by____by the back door.

The message you intend to convey through words maybethe exact opposite of ___________ others actually understand