1．You'll find the map ________ great value in helping you get around Hong Kong.
[答案] of
2．What are the main differences and ________(similar) between them?
[答案] similarities
3．It's up to you ________(decide) whether to go or not.
[答案] to decide
4．The road was so ________(crowd) that the car could not pass through easily.
[答案] crowded
5．________ we are not rich, we are still willing to offer a hand to whoever is in trouble.
[答案] While
