The ad says that one can lose 10 pounds in a week if using the products,but I’m ________ about that. [ ]

old Nancy many times about the meeting,but she still forgot it! —I understand Actually, anyone_______ be very forgetful at times

The researchers have discovered __________they believe to be a new species.

his stay in Xi’an, Jerry tried almost all the local foods his friends ________,

You _______ help your parents do some housework, they are tired.