If ____unsolved, the problem of food safety may lead to more serious results.
A. left B. making C. remained D. taking
Jack is late again. It is ____of him to keep others waiting.
A. normal B. ordinary C. common D. typical
Though________money, his parents managed to send him to university.
A. lacked B. lacking of C. lacking D. lacked in
It’s funny that Howard___ speak to you like your boss.
A. might B. would C. should D. must
Helen has ____French and can speak fluently after a short stay with her aunt in Paris.
A. picked up B. taken up C. put up D. made up
When you reach our company at 5:00 pm, I _______ there to discuss a problem with you.
A. wait B. have waited C. was waiting D. will be waiting
