— I enjoyed the food very much.— I’m glad you liked it. Please drop in any time you like. — ____
He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .
Mr. Duncan raised an unnecessary question _______ he then failed to find an answer.
I don't like to go swimming with my class even though I like to swim because I am so embarrassed _______ in my bathing suit.
It is usually not quite cold in this area in March, but sometimes the temperature ______be very low.
Welcome to the Historical Museum, everyone! This stone knife _______ in South Africa and experts can’t be exactly sure about its use.