--Tom is always making so many mistakes in his English exercises!--Yeah. If he __________ more careful, he________fewer mistakes.
A. was; will make
B. is; would make
C. were; will make
D. were; would make
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If I_____ you, I ________ the army.
A. am; would join
B. were; would join
C. am; will join
D. were; will join
乒乓球正手平击发球,挥拍击球( ),顺势还原。
A. 中下部
B. 中上部
C. 中部
D. 下部
正手平击发球时球拍拍面与乒乓球台( 0.
A. 垂直
B. 稍前倾
C. 后仰
D. 任意角度
If i ______ you, I________ go there at once.
A. am, would
B. were; would
C. were; will
D. am; will