I can’t remember what he looked like when we met __________the first time.[ ]

Now more and more people have realized that drugs do great harm to people’s health and their families. — Quite true, so everyone should them.

________that China has the largest number of iphone4s users now.— I believe so.

Why don’t you have a notebook with you? —I’ve_________it at home.

Excuse me. Is this ________ dictionary ? — No. That one belongs to ________.