Tìm và sửa lỗi sai
1.I [have(A)] two brothers, [both of(B)] [them(C)] are [studying(D)] in England.
2. It was a kind [of(A)] machine with [that(B)] we [were(C)] not [familiar(D)]
3. All national parks [are(A)] [at(B)] danger of [being destroyed(C)] [by(D)] pollution.
4. Laws have [been introduced(A)] [to prohibit(B)] the [killing(C)] of [endangering(D)] animals.
5. The song [to that(A)] we [listened(B)] last night [was(C)] [beautiful(D)]
6. They [asked(A)] me what [did happen(B)] last night, but I was(C) unable [to tell(D)] them.
7. Hummingbirds are [the only(A)] birds [which(B)] are [capable to(C)] flying backward [as well as(D)] forward, up and down
8. We [all(A)] know [which(B)] the [world's energy resources(C)] are [limited(D)]
9. [Despite(A)] there are some [disadvantages(B)] the [potential(C)] of alternative sources of energy is [great(D)]
10. Scientists [suggest(A)] [use(B)] solar energy [as(C)]an [alternative(D)] source of energy