Boris has brains. In fact, I doubt whether anyone in the class has ____ IQ.

Hearing the steps of their teacher on the floor, the students pretended ________ something attentively.

Do you know our hometown at all? —- No, this is the first time I ____ here

The practice of children working in factories has nearly ________.

I _____ watch foreign movies in my spare time ，but I appreciate Chinese ones occasionally at home