The companies are working together to create they hope will be the best means o
f transport in the 21st century.
| A．which | B．that | C．what | D．who |
—Do remember to take this medicine three times a day with warm boiled water.
--- ________
| A．Heard it | B．Made it | C．Got it | D．Taken it |
There is no perfect person, some people have made _____success of themselves in spite of what would appear to be ______ weakness in their professions.
| A．/, a | B．a, / | C．a, a | D．/, / |
I think you should complain, _____, of course, you are happy with the way things are.
| A．until | B．although | C．when | D．unless |
Rescuers had to _____ the search because of worsening weather conditions.
| A．call off | B．take off | C．come off | D．cut off |
—Are you sure Mike will help us if we are in trouble?
— _____. He is a reliable friend.
| A．It doesn’t matter | B．Don’t take it to heart |
| C．You can count on it | D．No problem |