A beam of light will not bend round corners unless ________ (make) to do so with the help of a reflecting device
made
暂无解析
Ihavebeenstudyinghereforfouryears,bynextsummerI________.
Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Night________(fall),wehurriedhome.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
Hotmetal________asitgrowscooler.
