I don’t really work here, I _____ until the new secretary arrives.
| A．just help out | B．have just helped out |
| C．am just helping out | D．will just help out |
—How long did you do your homework? —______.
| A．Before it struck 10 | B．Since supper time |
| C．So long as I stayed up | D．Until 10 o’clock |
My mother bought me a new pair of boots on my birthday _____she had promised.
| A．which | B．what | C．with | D．as |
. We liked the oil painting better ___ we looked at it.
| A．as | B．while | C．the moment | D．the more |
Through English we will be able to communicate_____ part of the world we come from.
| A．in which | B．even if | C．whatever | D．wherever |
. This photo of mine was taken ______ stood the famous high tower.
| A．which | B．in which | C．where | D．there |