Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled. [ ]
The battery in my cell phone is running low—- I _____ that last night before we went to bed
_______ that we were watching his every move, so he seemed to be going his own way in this business.
__________ good grades, you should try to study harder.
know what time you’ll be backthis evening, Eric—-I’m not sure. It depends on_______ theinterview lasts.