– Do you know _____ yesterday ? – It was at 8 o’clock in the morning.
It used to ______ that humans and animals were different and had little in common.
The day breaks, _______ the birds are singing.
________, I attended the meeting instead of him last week.
When you read the book, you’d better make a mark ______ you have questions.
I didn’t see your sister at the cinema. If she ______, she would have met my brother.