It has been found (A) that the length of light or dark periods influence (B) certain activities (C) of flowering plants (D).
A.A
B.B
C.C
D.D

Major advertising (A) companies have traditionally (B) volunteered its (C) time to public (D) service accounts.
A.A
B.B
C.C
D.D

The professor had already given the homework assignment (A) when he had remembered (B) that Monday (C) was (D) a holiday.
A.A
B.B
C.C
D.D

In 1975, according (A) to (B) the National Center for Health Statistics, the average life expectancy for people born during (C) that year is (D) 72.4 years.
A.A
B.B
C.C
D.D

Tea did not become (A) popular in Europe until the mid 17th century when it (B) has been (C) first (D) imported to England and Holland.
A.A
B.B
C.C
D.D

The process of making (A) Egyptian sun-dried mud brick are much (B) the same today as it (C) was (D) in prehistoric times.
A.A
B.B
C.C
D.D

Many of (A) the characters portrayed (B) by writer Joyce Carol Oates is (C) mentally (D) ill.
A.A
B.B
C.C
D.D

I had seen (A) the accident when (B) I was waiting (C) for (D) the taxi.
A.A
B.B
C.C
D.D

The following (A) days we will have (B) a lot of (C) fun (D) together.
A.A
B.B
C.C
D.D

A desert area that has been (A) without water (B) for six years will still (C) bloom when rain will come (D).
A.A
B.B
C.C
D.D