"Until now we have studied the trigonometric funcions and done the excersices on them now we will introduce the new topic of the lesson "
After the the new topic has been introduced and after the first new exercise on the new topic how can I use until now?
"We have finished the first exercise on the differential equations so until now we have always done/had always done/always did the trigonometric funcions while now we have introduced this new topic"
Eliana Grosso "Until now we have studied the trigonometric funcions functions and done the excersices exercises on them . N ow we will introduce the new topic of the lesson a new lesson on a new topic. " As shown above.
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Eliana Grosso"Until now we have studied the trigonometricfuncionsfunctions and done theexcersicesexercises on them. Now we will introducethe new topic of the lessona new lesson on a new topic