Mute your microphone, please.

Turn on your cameras.

Write your answers in the chat box.

Follow the instructions on the screen.

Could you speak more slowly/loudly, please.

Can you repeat that, please?

I'll send you that after the class.

I'll post the link in the chat right now.

I can't hear you very well.

The screen's gone blank.

See you next class.

Listen carefully, please!

I'm sharing my screen.

How long do we have for this activity?

Sorry for interrupting but...

I'm sorry for being late.