1.it was not until she look off her dark glasses that i ___(

題目：

1.it was not until she look off her dark glasses that i ___(recognize)the she was a famous film star.
2.the doctor said,"why not ___(try,take)exercise to lose weight?
3.Charles Cabbage is generally considered ___(invent)the first computer
4.___(determine)to give up smoking,he threw away his ___(remain)cigarettes.
5.on the wal ___(hang）twolarge portraits
6.it will be one and a half years before we ___(graduate)from the seniow high school.
7.whenever he was ased why he was late for class,he would answer carelessly.always ___(say)the same thing.
8.it remains ___(see)wheter jim will be fit to play in the finals.
9.the american Civil War ___(last)four years befre the North won in the end.
10.i always take something to read when i go to the doctor's in case i___(have)to wait.

解答：

1.recognized 強調句,時態和前面一致
2.take 做鍛鍊
3.to have invented ,be considered to have done 被認爲做.
4.having determined ,remaining 現在分詞完成時態,表動作發生在主句動作之前,remaining剩下的
5.are hanging 倒裝句,主語在最後
6.graduate ,it will be.before ,後面從句里用現在時
7.saying 現在分詞做狀語
8.to be seen ,remain to be seen 留待以後看
9.had lasted 過去完成時,在過去的一個動作之前發生
10.should have ,in case 以防 後面用虛擬語氣,should加原型