Question

--Where have you _______ all day?
--- I came back at noon and I _______ in this office since then.

A．been in; had been	B．been in; was
C．been; have been	D．been; am

Answer 1

C

解析試題分析：句意：你整天都在哪里？我在中午回來(lái)了，自從那時(shí)后就一直呆在辦公室里。句中有since句中用現(xiàn)在完成時(shí)，故選C
考點(diǎn)：現(xiàn)在完成時(shí)。
點(diǎn)評(píng)：現(xiàn)在完成時(shí)表示動(dòng)作已經(jīng)完成，并對(duì)現(xiàn)在造成了影響。初中階段注意兩個(gè)詞所連的時(shí)間狀語(yǔ)，即for后面加一段時(shí)間；since后面加點(diǎn)時(shí)間，有這兩個(gè)短語(yǔ)在句子中時(shí)，句子都需要用現(xiàn)在完成時(shí)。