Practice exercises
Decide on the correct form (singular or plural) of the verbs in brackets and complete the
sentences 1-6.
1
Scientists at Oxford U n ive rsity________ [believe) that there are many different
solutions to the w orld 's environm ental problem s.
2
Sunshine and w a te r ________ (/be) both necessary fo r the growth of plants.
3
This new m ethod of breeding disease resistant c ro p s ________ [have] been very
successful.
U The frequency of storm s on the west coast of South A m e ric a ________ (change) w ith
the m ovem ent of the Gulf Stream.
5
The varieties of tom ato available as a result of genetically m odified food processing
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