Thethreementriedmanytimestosneakacrosstheborderintotheneighboringcountry_____bythepoliceeachtime.
A、hadbeencaptured
B、beingalwayscaptured
C、onlytobecaptured
D、unfortunatelycaptured
翻译：
Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.(PassageTwo)
Twolinescanformaninfinitenumberof______.
A、ankles
B、angles
C、angels
D、adults
Itisimperativethatstudents_____theirtermpapersontime.
A、handin
B、wouldhandin
C、havetohandin
D、handedin
Thismountainrangehasmanyhigh_____andfertilevalleys.
A、peaks
B、hills
C、phase
D、pink