This is the house.... I lived when I first came to the US.
A.in that
B.in where
C.where
D.which in

It was in that house.... we spent our childhood.
A.where
B. that
C.when
D.in which

The number of students (A) attending (B) the seminar are (C) smaller than registration numbers. (D)
A.students
B.attending
C.are
D.numbers

The registrar does not know how many (A) people is already (B) registered at (C) the hotel for the annual (D) convention.
A.how many
B.is already
C.at
D.annual

The (A) passengers, tired after a very (B) long trip, was relaxing (C) in every available (D) seat in the airport lobby.
A.The
B.very
C.was relaxing
D.available

I tried to make it (A) clear to (B) them that urgent (C) action were (D) required.
A.it
B.to
C.urgent
D.were

The influence of the nation’s (A) literature, art, and science (B) have (C) captured widespread (D) attention.
A.nation’s
B.science
C.have
D.widespread

To calm his angry girlfriend, John offered an apology.... Jane accepted.
A.which
B.who
C.whom
D.when

We have many blessings for those.... we are deeply grateful to.
A.whose
B.whom
C.that
D.which

The children.... skateboard in the street are especially noisy in the early evening.
A.who
B.whom
C.which
D. whose