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【简答题】
在SELECT语句中, 子 句用于选择满足给定条件的元组,使用 子句可按指定列的值分组,同时使用 子句可提取满足条件的组。
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皮皮学刷刷变学霸
举一反三
【单选题】—Does your father often play with you? —_____. [ ]
A.
Yes, he is
B.
Yes, seldom
C.
No, never
D.
No, he often plays
【单选题】He often ______ ping-pong with his friends. Now they ______ ping-pong at school. [ ]
A.
play; are playing
B.
plays; play
C.
plays; are playing
D.
plays; is playing
【单选题】He often practice _____ the piano in his room. [ ]
A.
play
B.
playin g
C.
to play
D.
played
【单选题】He often speaks the role he played in the play, ______ made others upset. [ ]
A.
which
B.
that
C.
where
D.
when
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