Question

That resort town is __ populated in winter than in summer.

F. Sparse

G. Sparsely

H. More sparsely

I. Most sparsely

By the time they graduate, they __ school for twelve years.

F. Will be attending

G.had been attending

H. Have been attending

I. will have been attending

Answer 1

both questions are answer H.

Answer 2

1. The resort town is more sparsely populated in winter than in summer.
2. by the time they graduate !they had been attending school for twelve years.