Computers(二)本讲目标被动语态被动结构:be+done一般现:____________+done一般过: ____________+done一 般将: ____________+done现完: ____________+done过完: ____________+done题一:In t he last few years thousands of films _____ all over the world
have produced B
have been produced C
are producing D
are being produced题二:Experiments of this kind _____ in both the U
and Europe well before the Second World War
have conducted B
have been conducted C
had conducted D
had been c onducted题三:His sister left home in 1998, and___ si nce then
had not been heard of B
has not been heard ofC
had not heard of D
has not heard of题四:— How long _______ the book ______ so far
— Ten days and I will return it tomorrow
was; borrowedB
has; borrowedC
has; been borrowedD
has; been kept 题五:He is said________ to 5 years in pr