Jenny hopes that Mr Smith will suggest a good way tohave her written English ______ in a short period

I looked up and noticed a snake ______ its way up the tree to catch its breakfast, ______ scared me away.

下列各句中，没有语病的一句是（ ）

When did your cousin begin to show his interest in medicine?—It was a Saturday ___ she noticed her uncle experimenting on a frog in his lab

Would you mind answering some questions on shopping habits— _____________________________.