Why are your eyes red?
Have you been crying?

How long have you been
studying English?

How long have you been
waiting for me?

How long has he been
playing the guitar?

How long have they
been watching TV?

How long has this been
going on?

How long has Tom been
wearing glasses?

Have they been dancing
together long?

Why haven't you been
sleeping well?

Have you been bathing?
Your hair is wet.

Have you been crying?
No, I've been cutting
onions.

How long have you been
following me?

What have you been
doing lately?

Has Mary been waiting
long?

Have you been working?
You look tired.

How long has she been
teaching in a school?