I tried to come closer to watch the bird, but as soon as it noticed me, ______ into the woods.[ ]

ys teachers feel they can’t help everystudent ________ suitable reading materials, so they encourage them __________English on the Internet.

If you want to make progress, you’d better be strict _____ yourself ______your studies.

Sir, could I hand in my homework a bit late— _______, since you’ve been unwell these days.

liant idea occurred to him, ___ to his researchin the lab.