Grammar: can/could/may/will/would Can/could/may I help you?
Can/could/may I use the phone?
Can/could/may I have some water?
Can/could/will/would yuo take out the rubbish?
should/could
We should/could have a go at playing beach volleyball - it looks like a lot of fun! You should /could look up the word in the dictionary.
must/have to/need( to) can't
I must /have to be home by six o'clock.I need to make a phone call.
You mustn't/can't walk on the grass. Look at the sign!
You don't have to/ don't need to/ needn't cook tonight. We're going out.
1. It's necessary to follow road signs in order to avoid accidents.
2. You should check your answers a few times before passing.
3. The surface was too dirty so we hardly could see something.
4. If you meet dead-end, you shouldn't give up your dreams and goals.
5. There are lots of possible ways out of situation.
6. She was suspected in terrible murder.
7. This girl was cursed by dark witch.
8. She lost her temper because of my silly mistakes.
9. I'm sure that she will come back one day.
10. These thick bushes can probably hide some mystery inside.
Объяснение: