The conference was held to discuss the effect that tourism has ______ the wildlife in the area.

Having walked in the desert for several days，we finally reached what was called oasis，________

You look very tired this morning. What did you do last afternoon — I did _______ Christmas shopping.

In my opinion, it is a good way for us to memorize new words by seeing them _______[ ]

I hear that Jane has achieved great success. — ________ and __________.