1.He _____(感到疑惑)why he couldn't find his wallet.

1.He _wondered____(感到疑惑)why he couldn't find his wallet.
2.那个男孩够幸运的,能看到那场篮球比赛.
The boy was _lucky___ _enough___to __have____ the __view____of the basketball__match____.
3.我恐怕这不是一个好主意,你能想出一个更好的吗?
___I'm_____ ___afraid_____that 's not a __good___ ___idea____.Can you _think_____ __of____a _better____ _one__?

1. wonders/wondered都可以。并不能根据他所疑惑的内容时态（从句）决定他疑惑时的时态（主句）。但是如果主句时态是过去时，从句需要是过去时或者过去以前的时态。（一般真理除外，和主句时态无关）
2. lucky enough, watch ,final ,match
3. I'm afraid, good idea, think of, better one...

1.wondered
2.lucky enough see final match
3.I'm afraid good idea thing of better one