It's Saturday but my mum _______________ at the office today.
is working
doesn't works
are working
don't work
Can you help me? I ___________________ the 3rd exercise.
don't understand
not understand
doesn't understand
am not understanding
The 1st train to Madrid ______________ at 7:00 on weekdays and at 8:30 at the weekend.
leave
leaves
don't leave
is leaving
_________ you ___________ your English homework? Yes I am.
Do / do
Is / doing
Are / do
Are / doing
