Joe likes ______, but he doesn’t like ______ this afternoon.

We should all remember that some great scientific discoveries _____ by chance. [ ]

Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled. [ ]

Excuse me, could you tell me ______—Sorry, I don’t know. I’m new here.

g could be done at the meeting, thechairman_____ absent