--- Why didn’t Mr. Smith arrive on time for the meeting?--- He must have been ________ on his way here in the traffic jam.
Nobody but doctors or nurses and those by Dr. Longman to enter the patient’s room.
—Peter, you take down the result of the experiment, ? —Oh, no problem, but I need to find my pen and notebook first.
To be honest, I wonder why you are so late.—Sorry, I ___ that you were waiting for me.
It is very important for us to employ a word or a phrase according to the in language learning.
It was not until dark ___ he was aware of ___ he thought was the correct way to solve the problem.