C. by
D. ahead of
16. If you hear the fire _____, leave the building quickly.
A. warning
B. alarm
C. signal
D. bell
17. The troops have been on the _____ for a possible enemy attack.
A. alarm
B. alert
C. warning
D. notice
18. Although his people did not _____ his efforts, he kept trying.
A. agree with
B. apply to
C. approve of
D. consent with
19. Picasso's _____ ability was apparent in his early youth when he started drawing sketches.
A. writing
B. artistic
C. reasoning
D. literary
20. We hope that the measures to control prices, _____ taken by the government, will succeed.
A. when
B. since
C. after
D. as |
