My parents _______ have arrived at suppertime but their flight was held up due to the heavy fog.
I can’t say which wine is best, it’s a(n)___ of personal taste.
It was in the lab___was taken charge of by our teacher____ they did the experiment.
Our teacher makes good use of any time______ he can spare.
London,______ last year, is a nice old city.
Because of my grandma’s poor memory, she has forgotten all____ you told her.