Adultssometimesenvychildrenwhoplayallthetime____theythemselveshavetowork.rainorshine.
A、while
B、once
C、since
D、though
Hetreatsit____arequestforinformation.
A、for
B、as
C、like
D、by
A、reserveameetingroom
B、orderrefreshment
C、findacomputer
I____comeyesterday,butIcouldnot.
A、wastohave
B、must
C、ought
D、haveto
Talkingtoforeignersisfunifyou____therighttimeandplace.
A、locate
B、consider
C、choose
D、decide