The old couple have been married for 40 years and never once ____with each other.
—How much of the foreign expert’s speech have you understood? —Almost nothing. I wish I ________ harder at English.
At the crossroads, you have to drive very ________ to avoid traffic accidents.
David has to admit the fact ________ he has fallen behind the others in his class.
—Where are you going during the summer vacation? —I’ve found a nice beach ________ I can enjoy swimming.
—I’ll be away on a business trip for a week. Would you mind looking after my dog? —Not at all. ________.