A.lonely; alone
B.alone; lonely
C.alone; alone
D.lonely; lonely
A.done
B.be done
C.having done
D.to have been done
A.the; a
B.a; the
C.a; 不填
D.the; 不填
A、must be paid to
B、ought be paid to
C、must pay to
D、should be paid by
A.better
B.worse
C.bad
D.well
A.不填; a
B.不填; the
C.a; the
D.the; the
this class.
A) to change B) changing
C) changed D) change
A.had been
B.has been
C.was
D.been
A.able
B.competent
C.unable
D.disable