Give the correct tenses of the vebs

give the correct tenses of the vebs
what..you(do)............this weekend?l might (clean)....the house
lf  we plant more tress,the air(not,be)......so polluted
when was young,he(speak).................engish ưell
.....you(have).....a car that can fly into space in the future?
our future house(use)..........solar energy 
my mother cold(play)...piano when she was 6 years old
shall we (turn).................off the light to save electricity when nobody is in the room
we (pass).........lf we study harder
my class(visit) ......................hue last summer
...........you ever(be).................to london?
he...................never(see).................such a lovely girl before 
nam(not do)......his homework yet
.....he(be).............at home tonight?no,he........He(be).................at his grangmother's house
..........you(meet).....her two weeks ago?
cảm ơn trc nha 
nhưng mà phải đk 100 phần trăm <.>
:))