It seems that pigeons have a compass inside them that tells them _____ they need to go. That is why they never get lost.

Is this the reason ______he explained atthe meeting for his carelessness in his work

There are ________ people in the supermarket. It’s socrowded. A．hundred

Which class sang ________ in the school singing competition yesterday—Class 1, Grade 8.

This is _______ MP4. Yours is overthere.