1) Gold___in California in the nineteenth century. a) was discovered b) has been discovered c) was discover d) they discovered 2) All planes____before departure. a) will checked b) will has checked c) will be checked d) will been checked 3) Where did you get these old dresses?"."We___them in the old trunk". a) were found b) finding c) found d) have been found 4) I wanted___by the head of the company,but it was impossible. a) to see b) to be seen c) seeing d) being to see 5) Some body cleans the room every day. a) the room every day is cleaned b) the room is every day cleaned c) the room in cleaned every day d) the room is cleaned by somebody every day 6) They cancelled all flights because of fog. a) all flights because of fog were cancelled b) all flights were cancelled because of fog c) all flights were because of fog cancelled d) all flights were cancelled by them because of fog 7) People don't use this road very often. a) this road is not used very often b) not very often this road is not used c) this road very often is not used d) this road not very often is used GIUP MINH VOI A , MINH CAM NHIEU^_^^_^