Directions: Combine each sets of sentences into one sentence, using a. as the core idea.

1. Sentence Combination Exercise:

1.
a. USDA warned pregnant women something.
b. The women should limit the amount of canned tuna.
c. They eat the canned tuna.
d. The tuna contains mercury.
e. Mercury can harm the nervous system of an unborn child.

USDA warned pregnant women that they should limit the amount of canned tuna they eat because it contains mercury, which can harm the nervous system of an unborn child.

2.
a. Scientists found that the women's brains were significantly more active.
b. The women's recollections were significantly stronger.
c. They tested women and men.
d. They wanted to know about for their ability to recall emotionally loads of photos.
e. They are photos of guns, gravestones, dirty toilets.

When they tested women and men for their ability to recall emotionally loads of photos--guns, gravestones, dirty toilets, scientists found that the women's brains were significantly more active and their recollections are stronger.

3.
a. Warner Bros. was afraid of something.
b. The movie would receive a PG-13 rating.
c. The rating is a dangerous problem.
d. Potter's most fans are preteens.
e. They are devoted fans.

Warner Bros. was afraid that the movie would receive a PG-13 rating, a dangerous problem, as Potter's most devoted fans are preteens.

4.
a. Practitioners praise Tai Chi's spiritual benefits.
b. They also praise Tai Chi's psychological benefits.
c. What has attracted the attention lately is something.
d. The attention is of Western Scientists.
e. Tai Chi does something for the body.

Practitioners prise Tai Chi's spiritual and psychological benefits, but what has attracted the attention of Western scientists lately is what Tai Chi does for the body.