Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what | C．it, what | D．what, it |
Mr. Ben asked me a question ____ I could go with him to ______ he called the Treasure House next week.
| A．that; which | B．whether; that | C．whether, what | D．that; where |
You and I could hardly work together, ______?
| A．could you | B．couldn’t I | C．couldn’t we | D．could we |
----What did the young man come to your company for?
--- He wanted a job, _______could help him support his family.
| A．what | B．one | C．that | D．one that |
--- I hear that Jane has achieved great success.
--- ________ and __________.
| A．So she has; so have you | B．So she has; so you have |
| C．She has so; so have you | D．So she does; so do you |
Emergency line operators must always _______calm and make sure that they get all the information they need to send help.
A. grow B. appear B. become D. stay