We use ..................... to link clauses within a complex sentence.

If we always have our knowledge updated, technology aids a lot in any areas of activity.

The last visitor to stay with us came from England.

Microwaves are used for cooking, telecommunication ………. .

California, ……….more populous state than any of its Western neighbors, has greater representation in the House.

The discovery of the halftone process in photography in 1881 made it ………….photographs in books and newspapers.

The Pawnee Indians regarded corn .............. sacred gift, and many of their religious ceremonies are centered around this crop.

The question, how I can do it, doesn't matter much.

The idea occurred to them while Hall was speaking.

Art tends to be ……….more after the death of the artist, but most literary works tend to decrease in value when the writer dies.

“Is attendance important in this class?”

“No, but in the last class it ........................ very seriously.”

Blood in vessels just under the nasal lining ............up its heat to warm the air.

My sister has a ……….baby.

If endangered species ……….saved, rainforests must be protected.

Flag Day is a legal holiday only in the state of Pennsylvania, …………. Besty Ross sewed the first American flag.

The first American ..............a professional sculptor was a woman, Patience Lovell Wright.

Leaving us at the gate like that was very thoughtless.

I ……….bacon and eggs every morning.

Last Sunday was ........................ that we all went on a picnic.

Petrol is now ........................ it was last year.