Moody_m Posted 11 years agoGrammar
collocations and grammar
Which ones are correct?
1 .I don't have any knowledge about astronomy.
or
I don't have any knowledge of astronomy.
2. The cold water made it impossible to swim.
or
The cold water made it impossible for them to swim.
3. Mary regrets not buying a dog.
or
Mary regrets she hasn't bought a dog.
or
Mary regrets she didn't buy a dog.