Giải ptrinh 

1x+1x+1x=11x+1+1x

People‘s heath is poor. The food is contaminated. (due to) -->_____________________________________________

I can’t come because I have to help my father something. (Conditional sentence type 2) --> If 

1. The bus to Big Ben _______________ (leave) at 8.00 a.m every morning.

2. The famous Sydney Opera House _______________ (visit) by millions of tourists since 1973.The famous Sydney Opera House _______________ (visit) by millions of tourists since 1973.

Susan (went/ will go/ would go) to the beach with her family if it isn’t full of rubbish.

a. went

b. will go

c. would go