My sister-in-law __________ (drink) a cup of coffee right now. So, don't bother her.
a) am drinking
b )is drinking
c) are drinking
d) drinks

My baby sister __________ (ride) her bicycle.
a) isn't rideing
b) isn't riding
c) aren't riding
d) doesn't ride

_____ you _____ (teach) online? Yes, I _____.
a) am / teaching / am
b) teaching / am / am
c) are / teaching / am
d) teaching / are / am