D. Complete the sentence using the appropriate aspect of the verb.
16.
17.
18.
19.
20.
They
Justine
The boys
(buy) food for their pets. (simple future)
(read) his law book all night long. (past progressive)
(swim) tomorrow. (future progressive)
(solve) that puzzle. (present perfect)
(write) for two years. (present perfect progressive)
He​