Question

(vii) The children were frightened because it (get
dark).
(Use Past Continuous Tense)
(walk) ten miles and are
(viii) They
resting now.
(Use Present Perfect or Present Perfect
Continuous form)
(ix) How long you (wait) for me?
(Rewrite in Present Perfect Continuous
form)
(x)
We
the lesson after the teacher
it to us (understand, explain).
(Use Past Indefinite or Past Perfect form)​

Answer 1

Explanation:

The children were frightened because it was getting dark , walking ten miles.

They have been resting now..

How long have you been waiting for me?

We understood the lesson after the teacher had explained.