1.-Why do plant (细胞)have this kind of flexibility?
-Sorry,I don't know.You can ask Mr Wang..
2.-Why can't doctors find a way to cure(癌症)?
--Because it is a difficult medical problem.
3.The(死)of that boy's grandfather made him quite sad.
4.Experts said the findings raised important questions,but more was needed.
5.We have snow in May,which is(not usual or common).

1. cells 2. cancer 3. death 4. research 5. unusual

1.Boy,take it easy.The competition is not a matter of life and .
2.(2025.江苏淮安期中)The old man is in his ,but he still keeps learning English.
3.The timely treatment prevented the disease from spreading.
4.(2025.江苏无锡锡东片期中)It must be an day for him since he met an old close friend.
5.-Can you find a place to have my new phone ?It doesn't work.-OK.

1. death 2. seventies 3. medical 4. unusual 5. repaired

()1.We have ______ unusual final examination this year.
A.a
B.an
C.the
D./

B 【点拨】空处应使用不定冠词 a 或 an 来表达“一个”，又因 unusual 以元音音素开头，故使用 an。

()2.My sister is a girl ______ a heart full of love.
A.has
B.have
C.with
D.and

C 【点拨】句意：我妹妹是一个富有爱心的女孩子。with a heart full of love 富有爱心的。故选 C。

()3.Peter didn't tell his parents that he was going home because he wanted to give them a ______.
A.note
B.surprise
C.call
D.gift

B 【点拨】note 便条，通知；surprise 惊喜；call 通话；gift 礼物。故选 B。

()4.The old man ______ cancer.His ______ made us very sad.
A.died in ; dead
B.died of ; dying
C.died in ; dying
D.died of ; death

D 【点拨】“死于癌症”要用 die of cancer；his 在此为形容词性物主代词，其后应用名词 death。故选 D。

()5.My father joined the army in ______ when he was in ______.
A.1980 s ; twenties
B.the 1980 s ; his twentieth
C.1980; his twenties
D..1980 s ; the twenties

C 【点拨】“in+年份”表示“在某一年”；“in the 1980s”表示“在 20 世纪 80 年代”；“in one's+整十基数词的复数形式”表示“在某人几十多岁时”。故选 C。