根据句意从方框内选择合适的词填空。bright, achieve, certai
题型：填空题
问题：
根据句意从方框内选择合适的词填空。
2. For _____ reasons he was unable to attend the meeting. 3. She thinks she's _____ a lot this year. She's proud of what she's learnt. 4. English is _____ useful, but it's difficult to learn. 5. Simon is  a _____ boy and he works hard. Everyone thinks that he will have a ________ future. |