answer the questions for the better mark!

The child _____ playing in the yard is my son.

• was

• now

• is

• he

_____ heated by solar energy have special collectors on the roofs to trap sunlight.

• Homes

• A home

• Homes are

• A home is

_____ is taking a trip to New York.

• When

• Her

• The woman

• They

A power failure occurred, _____ the lamps went out.

• so

• then

• next

• later

_____, Adinda, is attending the lecture.

• Because of the time

• My sister

• Sadly

• Yesterday

Volunteers _____ for work on the new space program.

• hopefully

• next month

• necessary

• are needed

The packages _____ mailed at the post office will arrive on Monday.

• just

• them

• have

• were

___________, Sarah rarely misses her basketball shots.

• Sarah is an excellent basketball player

• Her excellent basketball play

• An excellent basketball player is

• An excellent basketball player

Baking powder, composed of an alkali and one or more acid salts, are used to make cakes and biscuits light.

• are

• composed

• an

• and

Each number in a binary system are formed from only two symbols.

• binary

• formed

• are

• two