Complete the sentences to make a meaningful sentence: a) They/ ask/ her/ if/ she/ can/ go/ them.; b) At 7 o'clock/ his sister/ wash/ clothes

1. Complete the sentences to make a meaningful sentence
a) They/ ask/ her/ if/ she/ can/ go/ them.
b) At 7 o'clock/ his sister/ wash/ clothes.
c) I/ learn/ while/ my brother/ play/ computer games.
d) How long/Nga/Hoa/learn English?
2 . Give the right form of the words
a) There were 100 ................. in the race (participate)
b) These highlanders live in the.................. area (mountain)
c) Ha Long Bay was.............as a world Heritage Site by UNESCO (recognization)
d) Nha Trang is well-known for its sand beaches and its............buildings (culture)