同義句轉(zhuǎn)換  根據(jù)上句完成下句,確保意義相同或相近。 

1．When I get to Beijing，I'll phone you at once．

   When I get to Beijing，I'll _______ you _______ at once．

2．In the beginning，I thought it difficult to learn English well．

    _____ _____，I thought it difficult to learn English well．

3．The boy is too young to go to school．

   The boy is ______ young ________ he can't go to school．

4．Mary's friend lent a book to her．

   Mary ______ a book ______ her friend．

5．David was the best at the exam in his class．

David was better at the exam than _____ _____classmate．