His eyes suddenly widened I knew a good idea must have _________ to him

Yunnan is beautiful and I’m ______ visiting it again.

First, it is important to recognize what kind of person you are and which special qualities make you different from ______.

Although this medicine can cure you ________yourillness, it has a bad effect____ you.

Have you heard of Earth Day—Yes. The first Earth Day ____ in 1970 to educate us to protect our planet.