B21 He closed the door…………..he locked it. a) as soon as b) until c) before B22 Ann called her mother she got home. a) as soon as b) until c) when B23 The book you are reading is very interesting. a) who b) why c) which B24 Science fiction books are very . a) interest b)interested c) interesting B25 He waited in the airport the plane arrived.
