`1.` A. will (in the future)
`2.` C. take (sau will giữ nguyên)
`3.` B. won't
`4.` A. is (he đi với is)
`5.` A. Because
`6.` C. visited (in + time `->` thì QKĐ)
`7.` B. is/ will go
`8.` A. reduce
`9.` C. hasn't left (yet `->` thì HTHT)
`10.` C. most peaceful (one of the most peaceful cities: một trong những thành phố yên bình nhất)
`11.` C. If you work hard
`12.` B. but
`13.` C. Don't
`14.` B. can't
`15.` B. When
`16.` A. because
`17.` D. next (next to: bên cạnh)
`18.` B. went (last + ... `->` thì QKĐ)
`19.` A. Did
`20.` C. didn't (last week `->` thì QKĐ)
`21.` A. visited (last weekend `->` thì QKĐ)
`22.` A. were
`23.` D. so
`24.` D. although
`25.` A. How many
`26.` B. Who
`27.` C. How
`28.` D. because
`29.` A. will play (next week `->` thì TLĐ)
`30.` A. won’t go (next weekend `->` thì TLĐ)
`31.` B. Who
`32.` D. be having
`33.` A. meet (sau will giữ nguyên)
`34.` A. what
`35.` A. will
`36.` C. No, he won't
`37.` A. be
`38.` A. goes (often `->` thì HTĐ)
`39.` A. will go (next week `->` thì TLĐ)
`40.` C. More