Several weeks had gone by ________ I realized the painting was missing.
A.as
B.before
C.since
D.when
Paul had to write a history paper,________ he
couldn’t find time to do it.
A.but
B.so
C.because
D.if
Several weeks had gone by ________ I realized the painting was missing.
A.as
B.before
C.since
D.when
Paul had to write a history paper,________ he
couldn’t find time to do it.
A.but
B.so
C.because
D.if