10.The girl who is reading a book is my younger sister.
11.The flowers sold in those flower shops are from Dalat.
12.The bus that broke down took us to the seaside.
13.I haven't gone abroad since the summer of 1978.
14.He last wrote to me in April.
15.She has not seen her elder sister since 1999.
16.She last had a swim five years ago.
17.They haven't talked to each other for two months.
18.She has met me 5 months ago.
19.Brazil is a country that exports a lot of coffee.
20.It is a coffee-making machine.
21.Brazil is a country that exports a lot of coffee.
22.It is a fire-making contest.
23.It is a mountain-climbing club.
24.It is a water-fetching contest.
25.Vietnam is a country that exports rubber.
26.His brother asked me to lend him some money.
27.Nam asked Lan if her uncle drove very carefully.
28.The teacher asked Ba if he could finish his homework then.
29.Minh was asked where she was going tomorrow by Lan.
30.The boy asked the neighbor where they had bought those beautiful flowers.
31.Thu asked Phong when they would meet that night.