The course about Chinese food attracts over 100 students per year, _______ up to half are from overseas.
| A．in which | B．of whom | C．with which | D．for whom |
Bob ran the 100 meters in 9.91 seconds, and I have not seen _________ this year.
| A．the best | B．better | C．the most | D．more |
My mother always gets a bit _________ if we don’t arrive when we say we will.
| A．anxious | B．ashamed | C．weak | D．patient |
At times, worrying is a normal, ________ response to a difficult event or situation --- a loved one being injured in an accident, for example.
| A．effective | B．individual | C．inevitable | D．unfavorable |
This cake is very sweet. You _____ a lot of sugar in it.
| A．should put | B．could have put | C．might put | D．must have put |
He paid for a seat, when he ______ have entered free.
| A．could | B．would | C．must | D．need |