Many trees _______ on the hills last year.And we will plant more this year.

填入下面文段空白处的词语，最恰当的一组是注重学英语是好事，同时也要十分重视母语的学习。汉语是世界上最优美、最富表现力、最有魅力的语言之一。 ① 中国改革开放进一步发展，学习汉语的各国人越来越多，我们自己 ② 应该学好汉语，用好汉语。 ③ 某些人以能讲英语为荣，说话时 ④ 夹上许多“洋文”，而母语的使用 ⑤ 白字连篇，出尽“洋相”。

―Excuse me. Which is the way to the museum―Sorry, I don’t know. This is my _____ time here.

___________ is the Summer Palace from here—About three kilometers away. You can take the No.35 bus.

.—-Are you happy with this laboratory? —-Not a little. We can’t have _________.