When I was doing shopping in the market the other day, I _____ an old friend of mine, who I hadn’t met for twenty years.
| A．came up | B．came over | C．came across | D．came about |
I shall take you back to Beijing _____ you are well enough to travel.
| A．presently | B．promptly | C．immediately | D．shortly |
Our house is the most _____ one in the street; it is painted red.
| A．permanent | B．indifferent | C．predominant | D．prominent |
It has been laid down that each student must _____ a composition to the teacher once a week.
| A．turn in | B．give up | C．put forward | D．bring out |
Radium salts, which have been found to _____ in bones, give rise to cancers of the bone.
| A．pile up | B．build up | C．keep up | D．pull up |
Having said he would mend the clock, he discovered that he had not brought the _____ tools for the job.
| A．concise | B．correct | C．right | D．precise |