快来快来。我有几道英语题不会。会的帮帮我吧。谢谢。

1.My English teacher said nothing in the end. （改为同义句。每次一空。）
My English teacher left without a word .
2.从中选适当的介词，完成下列句子。
through, across, in, for, along, on.
①Look! Many tourists are walking along the beach.
②They talked for a while and then left.
③When did you walk through the forest?
④there are a lot of people on the ship.
⑤Sue learned to write letters in Chinese.
⑥The street is too busy to walk across.
3.给下列句子改一个错。
1. This student doesn't study enough hard.
This student doesn't study hard enough.