Question

Correct tense form.They (work) in the library at present.They ----(work)there fo
r an hour .

Answer 1

They have been working there for an hour

Answer 2

They are working in the library at present.

They have been working there for an hour.

• We were supposed to fill in the given blanks with the help of the correct form of the given verbs.
• On observing the sentence, we can say that the first sentence must be in the present continuous tense while the second sentence must be in the present perfect continuous tense.