Question

1.A piece of the suture __________ embedded in the scar tissue.
A) was
B) were

2.He is the doctor __________ performed my appendectomy
A) who
B) whom
C) whose

3.Neither the fracture nor the laceration __________ surgery.
A) require
B) requires

4.The fractures of his phalanges had __________ origin in an automobile accident.
A) its
B) it's
C) their

5.The physical therapy treatment, in addition to the medications, __________ sufficient at this time.
A) are
B) is

My answers are:
1.A
2.B
3.B
4.C
5.B

Thanks.

Answer 1

2. is wrong.

The subject of the verb "performed" is "who."

Answer 2

Thanks so much!

Answer 3

You're very welcome.

Answer 4

2 is A.