The children were disappointed because they had hoped . . . . . . . . with us.

to have gone
to go
would have gone
go

The correct answer is: A. to have gone

The children were disappointed because they had hoped to have gone with us. This means that they wanted to go with us, but they were not able to. The other options are not correct because they do not express the same meaning.

  • Option B, to go, does not express the fact that the children were not able to go with us. It simply says that they wanted to go.
  • Option C, would have gone, is in the past perfect tense. This tense is used to talk about something that would have happened in the past, but did not happen. In this case, the children did not go with us, so the past perfect tense is not appropriate.
  • Option D, go, is the simple present tense. This tense is used to talk about things that happen regularly or repeatedly. In this case, the children did not go with us, so the simple present tense is not appropriate.

Therefore, the correct answer is A. to have gone.