根據(jù)首字母或漢語提示，完成下列單詞的拼寫，使句意明確、語言通順。
1. This morning I sent them some flowers as an
expression
of thanks.
2. You should pay
attention
to your speaking speed.
3. Can you
repeat
what you said just now? I didn't hear you clearly.
4. Pronunciation, spelling and
grammar
are important for English study.
5. Among all the subjects, she likes
physics
and chemistry best.
6. Students should
review
(復(fù)習(xí)) what they have learned after class.
7.
Knowledge
(知識(shí)) comes from questioning. So we should learn to ask questions if we want to learn more.
8. For me, listening to English songs is the
secret
(秘密) to learn English words.
