помогите пожалуйста разобраться с ответами))

11. Fill in the correct types of comparison

This armchair is comfortable the sofa,

but it isn't expensive the sofa. b) as as, as as

12, Choose the correct comparative construcition

She is not to carry her bike. c) strong enough

13. What modal verb do we use to express on-the-spot decisions? a) will

14. Choose the most correct grammatical construction

Watch out! We to have an accident! b) are going

15. Choose the correct modal verb

I bring you another cup of coffee? - Yes, please. c) Shall