Toefl Structure February

Structure Februari

1 / 10

1. Diamonds are often found in rock formations called pipes, ___ the throats of extinct volcanoes.

in which they resemble

which resemble

there is a resemblance to

they resemble

2 / 10

2. William Samuel Johnson, ___ helped write the Constitution, became the first president of Columbia College in 1787.

whom he had

and he had

who had

had

3 / 10

3. Seals appear clumsy on the land, ___ are able to move short distances faster than most people can run.

but they

which they

they

which

4 / 10

4. The instrument panel of a light airplane has at least a dozen instruments ___.

the pilot must watch

what the pilot must watch

which the pilot must watch them

such that the pilot must watch them

5 / 10

5. A keystone species is species of plants or animals ___ absence has a major effect on an ecological system.

that its

its

whose

with its

6 / 10

6. Aerodynamics is the study of the forces ___ on an object as it moves through the atmosphere.

acting

act

are acting

acted

7 / 10

7. ___ for their strong fiber include flax and hemp.

Plants are grown

Plants grown

Plants that grow

To grow plants

8 / 10

8. ___, José Limon dance troupe often toured abroad.

The U.S. State Department sponsored it