Subject and Verb Agreement Pls help

1. There (is, are) not many apples left on the tree.

2. There (is, are) three pieces of pizza left in the box.

Which sentence corrects the error in subject-verb agreement? a student who submits a research paper with a weak thesis and multiple sources is going to receive a higher grade than students who submit a research paper with a strong thesis and only a few sources. a student who submits a research paper with a weak thesis and multiple sources is going to receive a higher grade than students who submits a research paper with a strong thesis and only a few sources. a student who submit a research paper with a weak thesis and multiple sources are going to receive a higher grade than students who submit a research paper with a strong thesis and only a few sources. a student who submits a research paper with a weak thesis and multiple sources are going to receive a higher gesubmits a research paper with a strong thesis and only a few sources

Pls, i really need on this question?

Reread lines 6-7 "the survivor." determine how the tone of these differs from the preceding lines (1-5)