The____populatedareawasabreedingplaceforinfectiousdiseases.
A、densely
B、sparcely
C、improperl
D、poisonous
Onnoaccount____everleavethebabyathomealone.
A、shouldyou
B、youshould
C、shallyou
D、youshall
Idon’tunderstand____believehim.
A、whydon’tyou
B、whyyouno
C、whyyoudon’t
D、whynotyou
I’veneverbeenoutofChina___________.Whataboutyou?
A、already
B、over
C、before
D、just
-Wehaven’theardfromJaneforalongtime.
-Whatdoyousuppose_____toher?
A、washappening
B、tohappen
C、hashappened
D、havinghappened