1. My parents should allow me to study with friends.(改為同義句) I should ______ ______ to study with friends. 2. They oft en clean their classroom after school. (改為被動語態(tài)) Their classroom ______ often ______ by them after school. 3. Li Lei gave Tom a new pen last week. (改為被動語態(tài)) A new pen ______ ______ ______Tom last week. 4. It took him ten years to finish writing the book. (改為同義句) He ______ ten years ______ the book. 5. They will publish these story-books next month. (改為被動語態(tài)) These story-books ______ ______ ______ next month.
