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It's hard for me to catch up with my classmates in English．But whenever I want to ________ , my English teacher always encourages me to work harder．
A．go out
B．give up
C．come back
D．run away
It's hard for me ________ an English song．
A．sing
B．to sing
C．sang
It’s hard for me ________ an English song．
It's hard for me ________ a letter in English.
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