What form is the verb after could?
Is could the same foe all subjects?
Do we use could for the present or the past?

1)Usually students pass exams 2 times in year.
2)I dont like Moscow because there are a lot of transport and noise.
3)How many time do you have to translate it.
4)This bus in never stop here.
5)I dont know which lessons have we got today.
6)Do you know what time is it now.
7)The train arrives at eight, right?
8)She is never beliving nobody.
9)They have lunch in restaurant once a week.
10)He go on the work by car reary.
11)Its always raining in this season.
12)He occasionally calls her and asks how she feels.
13)Some times I'm so tired that I fell asleep on the subway.
14)Do you understand what is this?
15)I wonder how many years, Carol?

1As a rule students pass exams twice a year.
2I don't like Moscow,it's very noisy and there is much transport here.
3How much time do you need to do
this translation?
4This bus never stops here.
5I don't know what classes you are having today.
6Do you know what time it is now?
7The train arrives sharp at eight,doesn't it?
8She never believes anybody.
9They have dinner once a week.
10He seldom drives to work.
11It is always rains here in this season.
12He rings her seldom and asks if she well.
13Sometimes I 'm so tired that I fall asleep in the underground.
14Do you understand what it is?
15I wonder how old Carol is?