rewrite each pair of sentences to make one sentry with the zero conditional 2) You cross an international date line. The time changes 3)It rains. The sky is cloudy. 4) Wood doesn't burn. There is no air 5) There is no rain. Grass doesn't grow 6) The water freezes. It's very cold 7) Babies are hungry. They cry 8) Iron rusts. It gets wet​

Exercise 3

Martha thought she was HOPELESS at math. (without hope)

Don’t be afraid of the dog – it’s HARMLESS. (without harm)

Pop said the lawnmower was a WORTHLESS piece of junk. (without any worth)

Pete was HOPEFUL / SURE that his project would do well at the Science fair. (full of hope)

The BEAUTIFUL rainbow seemed to be just over the next hill. (full of beauty)

The medicine was white and ODORLESS. (without any odor)

Mom said it was WONDERFUL to see Robert swimming so confidently. (full of wonder)

Please be CAREFUL when you go into the forest and don’t pick any of the mushrooms. (full of care)

Exercise 4

1. Shop assistants  2. Doctors  3. Architects  4. Businessmen  5. Pilots  6.Teachers  7. Diplomats  8. Secretaries  9. Bus drivers  10. Bankers

SECRETARIES DON'T HAVE TO know Italian.  

TEACHERS HAVE TO work with people,  

SHOP ASSASTANTS DON'T HAVE TO work at night.  

DOCTORS HAVE TO think much.

ARCHITECTS DON'T HAVE TO wear uniform.  

PILOTS HAVE TO travel.  

DIPLOMATS HAVE TO know English.  

BUSINESSMEN HAVE TO get up early.  

BUS DRIVERS DON'T HAVE TOwrite letters.  

BANKERS HAVE TO count money