【单选题】
He has()four successful books.
A、wrote
B、written
C、been writing
A、wrote
B、written
C、been writing
A、The helm has four blades. B、The propeller has forty blades. C、The windlass has four blades. D、The propeller has four blades.
A、He came to teach us last week. B、He teaches us English. C、He has two children. D、He is very nice