ESL, Srednji nivo

Making Phone Calls (1)

If you have ........., people can leave you messages if and when you are unable to answer your phone calls.
If you are awaiting a phone call from someone, you can say that you are ......... a call.
If you want to call someone, you have to ......... the phone number on the numeric keypad.
If you didn't answer a call because you were previously engaged in something, you can say that you ......... the call.
If you didn't answer your phone, you can ......... your voicemail messages at a later time.
If you are calling someone back, because they called you beforehand, you are ......... their call.
I've been trying to ......... Matt for more than three hours, but he won't answer his phone. Should I drive over to his house to talk to him in person?
If there is an emergency and you have to get ......... the phone quickly, you can say "Sorry. I have to go!"
If you want to ......... a phone conversation, you can say "I'm running late. I have to go now."
If a customer ......... you at work, you have to pay attention to what he/she is saying.