In zones where earthquakes are known to occur, ______ construction techniques can significantly reduce the effects of seismic wave.
#94980
A
to improve
B
improving
C
improved
D
being improving
推荐题目
—Hi, Lydia. Are you going to the concert on Friday?—I’d like to. But there are so many problems_______.
#95338
A
remaining to be settled
B
remained settling
C
remaining to settle
D
remained to be settled
The boys, ______ this frightening person, lost their tongues. 
#96117
A
face
B
having faced
C
facing
D
faced
The new-opened park is such a beautiful place that it is well worth_______.
#96952
A
visit
B
to be visited
C
being visited
D
visiting