Up to now, we ............. the pollution problems yet.

I have lived in this city for five years and I am ............ in traffic jams.

I just want to know what you ............ at this time tomorrow afternoon.

By the time you come back from work, I ............. this task.

There are many ways ............. to Rome.

I ............ in Vietnam before I moved to the US.

Did she say she ............. him tomorrow?

Last week, my professor promised that he .............. here today.

This is the first time I ........... here.

Now my sister ............ a bicycle of her own.

Our government ............ a system of private schools in a near future.

The screw is stuck. It won't loosen.

Can you hear the footsteps? Someone is going to enter the room.

How .............. since we ............?

Don't bother me while I ............

When the first child was born, they ............. for three years.

Selena ........... when a black cat jumped over her.

Trang usually ........... to the teacher in the class, but she ............ now.

The Earth ......... around the Sun.