They were able to creep away unobserved _____________________ it was very dark.
owing to the fact (that)
The lecture _____________________ on all of us.
Paola gave made a favourable impression
I _____________________ me very useful.
found the advice (that) Gustavo gave
The collapse _____________________ several years of heavy traffic.
of the bridge was due to
Carla _____________________ last Monday.
had never been/gone skiing before/until/till
The way students spend their free time _____________________ fifty years.
has changed in/over the last/past
Everyone _____________________ to study at university.
should be given the opportunity/chance
Susan picked the baby up gently so _____________________ him.
as not to wake
The improvement in Smith's performance _____________________ in the top three for the 10,000 metres.
has not led to him/his being
I've never _____________________ learning to play a musical instrument.
had the slightest interest in
You'll _____________________ order to improve the flavour.
need/have to thicken the sauce in
They will not _____________________ you have a receipt.
give you a refund/refund your money unless
The successful redisigning of the car _____________________ in sales.
resulted in a (rapid) rise/increase