Auxiliary verbs exercises multiple choice - Verb exercises
Choose the correct auxiliary verb to complete the sentences.
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Obviously, however, this orthodox approach
_____
not working, since the problems in question are getting worse.
is
were
am
TRANSPORTATION SAFETY BOARD 35 Southern wheels
_____
not been manufactured since 2000.
did
are
have
You
_____
not acted this suspicious since I found the " ape bones " in the basement.
has
have
do
Your hair
_____
not been this short since we first met.
has
are
is
What I
_____
not know till now, of course, is that you are a public relations expert.
are
was
did
A continuous coating of binder resin
_____
not desired since it deleteriously affects the drapability of the fibres.
have
is
does
I know it
_____
not look like much now, but just wait for the hot chocolate.
were
does
was
There is a reason why we
_____
not won one since then.
have
did
do
Everybody can understand that fossil fuels
_____
not going to last forever.
are
am
does
The European democracies
_____
not experienced any significant turmoil since the Second World War ended in 1945.
have
are
has
