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【单选题】
电压的方向规定为A.
低电位指向高电位
B.
高电位指向低电位
C.
以上都不是
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皮皮学刷刷变学霸
举一反三
【单选题】I _______my English book at home, so I had to ____one from my classmate.
A.
forgot ;lend
B.
forgot; borrow
C.
left; lend
D.
left; borrow
【单选题】I my homework yesterday, but unfortunately I forgot about it totally.
A.
need have handed in
B.
should have handed in
C.
must have handed in
D.
may have handed in
【单选题】I _____ my homework at home this morning. [ ]
A.
forgot
B.
have forgotten
C.
leave
D.
left
【单选题】—Where ______ you ______ Elsa? —At the supermarket. But she almost forgot my name. [ ]
A.
have; seen
B.
did; see
C.
will; see
D.
have; see
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