Structure Review

Scientists are now beginning to conduct

experiments on _____ trigger different

sorts of health risks.

• noise pollution can

• that noise pollution

• how noise pollution

• how noise pollution can

_____ will be carried in the next space

shuttle payload has not yet been

announced to the public.

• It

• What

• When

• That

The fact _____ the most important

ratings period is about to begin has

caused all the networks to shore up their

schedules.

• is that

• of

• that

• what

The National Restaurant _____

Washington, says that federal efforts to

regulate workplace smoking would limit

restaurants' ability to respond to the

desires of their patrons.

• Association in

• Association is in

• Association which is in

• Association, based in

Small companies may take their goods

abroad for trade shows without paying

foreign value-added taxes by acquiring

_____ an ATA carnet.

• a document calls

• a document called

• calls a document

• called a document

_____ in North American waterways a

little over a decade ago, zebra mussels

have already earned a nasty reputation

for their expensive habit of clogging

water pipes in the Great Lakes area.

• The first sighting

• Although first sighted

• Zebra mussels were first sighted

• First sighting

In the Milky Way galaxy, the most recent observed supernova appeared in 1604.

Because of the mobile of Americans today, it is difficult for them to put down real roots.

A pearl develops when a tiny grain of sand or some another irritant accidentally enters into the shell of a pearl oyster.

Doctors successfully used hypnosis during World War II to treat fatigue battle.