—It appears that your relationship with Mike is not normal, doesn’t it?
—I thought of him as a trustworthy friend _____, to my shock, he gave me away to the boss．
| A．unless | B．since | C．for | D．until |
He is a member of our ___ .
| A．brain power | B．brains power | C．brain powers | D．brains powers |
----Sorry, Michelle is a little shy.
----Never mind, I ____ be that way when I was ___ her age.
| A．would, at | B．used to, × | C．would, × | D．used to, at |
----How do you deal with disagreements between the company and the customers?
----They key____ the problem is to meet the demand ___by the customers.
| A．to solving; making | B．to solving; made |
| C．to solve; making | D．to solve; made |
______a fire, hotel guests are asked to remain calm.
| A．As a result of | B．In the event of | C．By reason of | D．In the time of |
As is known to us, theory is based on practice and _____ servers practice.
A. by chance B. in turn C. in return C. by turn