1. Choose the correct option: She has been working here ______ five years.

for
since
at
in

2. The project, which ______ last month, has already made significant progress.

start
started
starting
starts

3. Identify the error: The teacher said that he would gave us extra time to complete the assignment.

The teacher
said that
he would gave
to complete

4. Identify the error: The number of students attending the seminar are much higher than expected.

The number of
students attending
are much higher
than expected

5. Which word best completes the sentence? The board of directors ______ to announce their decision tomorrow.

is planning
are planning
was planning
were planning

6. Choose the correct form: This is the book ______ I was telling you about.

which
what
whose
whom

7. Identify the error: Each of the participants were asked to present their ideas clearly.

Each of the
participants
were asked
to present

8. Choose the correct sentence:

Neither Jack nor Jill were at home.
Neither Jack nor Jill was at home.
Neither Jack nor Jill is at home.
Neither Jack nor Jill has been at home.

9. Select the correct option: If I ______ you, I would take the offer immediately.

am
were
was
had been

10. Identify the error: He suggested that the committee discusses the proposal in detail.

He suggested
that the committee
discusses
the proposal