Составить по три предложения с : past simple, present simple и с present continues

Past simple: yesterday we swam in the river.     present simple: my sister likes reading. present continuous: i am reading the book now.                                                                                   

1. this company is very promising. this company isn't very promising. is this company   very promising? 2. there were some pens, a stapler, two rulers and a lot of clips in the office set. there weren't any pens, a stapler, two rulers and manyf clips in the office set. were there  any pens, a stapler, two rulers and manyf clips in the office set? 3. we may go home at 6 o'clock.   we may not  go home at 6 o'clock. may we   go home at 6 o'clock? 4. in summer mary usually plays tennis twice a week. in summer mary usuallydoesn't  play tennis twice a week. does    mary usually play tennis twice a week in summer? 5. it's going to rain.   it's not going to rain. is it going to rain? 6. i worked in bank, living in manchester.   i didn't  work in bank, living in manchester.   did  i work in bank, living in manchester? 7. we bought some things to eat in the shop. we didn't buy  any  things to eat in the shop. did we buy  any  things to eat in the shop? 8. suzanne has already had a baby! suzanne hasn't   had a baby yet! has  suzanne   had a baby yet? 9.  i'll graduate from the university in 3 years.   i won't graduate from the university in 3 years. will i graduate from the university in 3 years?

1)  i'll be able to do my homework. will i be able to do my homework? i won't be able to do my homework. 2)   you'll be able to call him tomorrow.    will you be able to  call him tomorrow? you won't be able to  call him tomorrow. 3) he'll be able to  conduct negotiations. will he be able to conduct negotiations? he won't be able to conduct negotiations. 4) he'll be able to lern cycling. will he able to    lern cycling? he won't be able to    lern cycling. 5) she'll be able to explain to teacher everything. will she be able to  explain to teacher everything? she won't be able  to  explain to teacher everything.