Grammar. Практичний курс.

a) to take

b) to have taken

c) take

d) having taken

a) have don

b) was going

c) used to go

d) had done

a) don`t go

b) won`t

c) won`t be able

d) can`t

a) to buy

b) for buying

c) to have bought

d) buying

a) to have done

b) to go

c) going

d) have done

a) to lock

b) locking

c) lock

d) have locked

a) have helped

b) helped

c) am going to help you

d) `ll help

a) `ll work

b) `m going to work

c) `ll have been working

d) `ll be working

a) buy

b) will have bought

c) `ve already bought

d) had bought

a) see

 b) have seen

 c) `ll have seen

 d) `ll be seeing