Is this your earser?—No,it isn’t. It’s ________.

The teacher was very angry _______ me because I didn’t finish my homework.[ ]

While the alien _______ a souvenir, the girl called the police.

How are you getting along with your English? —_____, I’m not good at English. But I will work harder on it. [ ]

What’s in the pencil-box? —________ a pen in it.