Which sentence contains a progressive verb?

A.

The weather forecast calls for rain this afternoon.

B.

Sarah will be joining us later for dinner.

C.

The basketball player made a difficult shot.

D.

We have eaten at this restaurant before.

A progressive verb denotes an action that is still ongoing or still in the process of doing it. Progressive verbs can either be past progressive (-ed form) or present progressive (-ing form). The sentence that contains a progressive verb is: Sarah will be joining us later for dinner. The correct answer is option B.