— I have no question at the moment, sir. — Don’t ________ to call me if you need a hand. I’ll help you.

—Was it in April, 1970 that China ________ sending its first satellite into space?—Yes, that's right.

If there is anything wrong with the sentence, please ____.

He is not very confident and always _______ before making a decision.

  I don’t want to _______ the topic, but why on earth did you get home that late last night?