The internet (has changed/changes) the way people communicate with each other.
has changed
(I check/I'm checking) my e-mail three or four times a day.
I check
I (is finding/find) it difficult to express myself when I'm angry.
find
We (don't go/aren't going) to many exhibitions in my art class.
don't go
(I'm going to study /I'll study) math at college next year,
I'm going to study
I (spoke/has spoken) to my boss about a work problem last week.
spoke
I (will give/am giving) a talk next week to some new recruits.
am giving
I (don't use / am not using) the phone for personal calls at work. It's not permitted.
don't use
I (haven't been able / haven't) to speak to my mom in years. It's terrible...
haven't been able
I don't think (I will/I'm going to) have time to go to your party this weekend.
I will
