A.has stood … has already gone
B.has been standing… has already been
C.is standing… has already gone
D.has been standing…has already gone
第1题
A.house kept
B.housekeeping
C.home kept
D.home keeping
第2题
A.have
B.has
C.to have
D.having
第4题
A.because
B.unless
C.while
D.as soon as
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