There was an _________ look on his face when he knew the bad grade of his son.

Will you go with us for an outing on Saturday— I’d like to, but I am really busy these days. Ican’t _______ a whole weekend.

rine, will you visit us this weekend— I planned to, but something unexpected _____.

The old couple often take a walk after supper in the park with their pet dog them. [ ]

When did they arrive––They ______two hours ago .They ______ here for two hours .