TOEFL Structure Exercise skill 20-26

Scientists at the medical center is trying to determine if there is relationship between saccharine and cancer

• is trying

• to determine

• is

• saccharine and cancer

Only with two-thirds vote by both houses are the U.S. Congress able to override a presidential veto

• two-third vote

• are

• able to

• veto

There are many frequently mentioned reasons why one out of four arrests involve a juvenile

• Frequently

• mentioned

• four arrests

• involve

The great digital advances of the electronic age, such as integrated circuitry and a microcomputer, has been planted in tiny chips

• great digital

• circuitry

• has

• planted

On the rim of Kilauea volcano in the Hawaiian Islands are a hotel called the Volcano Hotel

• the rim

• Hawaiian Island

• called

• are

Kepler’s Laws, principles outlining planetary movement, was formulated based on observations made without a telescope

• was

• formulated

• based

• made

Each number binary system are formed from only two symbols

• binary

• are

• formed

• only two

More than half of the children in the 1.356-member district qualifies for reduced-price or free lunches

(a)  

Five miles beyond the hills were a fire with its flames reaching up to the sky

(a)  

When is a flag hung upside down, it is an internationally recognized symbol of distress

(a)