It is vital. . . . . . . . . . . . . . . . . . . . . . . . .
A.
that we tell teenagers about the dangers of smoking
B.
that can we tell teenagers about the dangers of smoking
C.
that teenagers told by us about the dangers of smoking
D.
that should we tell teenagers about the dangers of smoking
Đáp án và lời giải
Đáp án:A