Tom had tothe invitation to the party last weekend because he was too busy.
The ________ expression on her face suggested that she _________ the _________ physics problem.
The boss has ______ difficulty in finding a man to take the place of ____ manager.
— How about dinner tonight? It’s on me. — ______.
It rained continuously for seven days, completely _________ our holiday.
Why didn't you go to see the film last night? Because I ________ it before. A have seen B. had seen C. see D. saw