根據(jù)中文提示，用詞組的適當(dāng)形式填空。每空一詞。

1. She ___________ ___________（收到……來(lái)信） her pen friend yesterday.

2. All the athletes ___________ ___________（對(duì)……滿意） with the nice service during the Beijing Olympics.

3. ___________ ___________（到目前為止），many measures have been taken to control the spread of A/H1N1.

4. After the earthquake, he left for Wenchuan as a volunteer ___________ ___________（而不是） a tourist.

5. You_________ __________（最好） check over your exam paper carefully before you hand it in.