difficult to ...; hard to ...
pleasant; agreeable; comfortable; refreshing
to take (a resource, e.g. time or money); to hang; to come into view; to arrive; to come under (a contract, a tax); to start (engines, motors); to attend
moderate (degree); proper (amount); temperate; suitable
to mix; to combine; to exchange (words, fire, etc.); to cross (e.g. swords); to join together
gate (for entry, boarding, etc.); gate; logic element
to go under; to pass under; to dive (into or under the water); to evade; to get around; to survive
to be sullen; to be offended; to be huffy; to be stuffy; to be stifling; to be muggy
to get strong; to gain strength
... being the case; (precisely) because ...; as might be expected from ...
elementary and middle school pupils
uncle; old man; mister; manybar goatfish (Parupeneus multifasciatus)
et cetera; etc.; and the like; and so forth
very much; very many; more and more
suddenly; abruptly; unexpectedly
to cross one's mind; to occur to one; to flash into one's head
now that you mention it; come to think of it; that reminds me; on that subject; speaking of which
junior high school student; middle school pupil
beginning; outset; first; onset
year; age; years; past one's prime; old age
to get on (train, plane, bus, ship, etc.); to get in; to get on (e.g. a footstool); to step on; to reach; to go over; to follow
holiday; day off; furlough; absence (from work)
homecoming; returning home
to go on a trip; to go out to play; to go and visit (a friend)
father; dad; papa; pa; pop; daddy
to make a speech; to address
memory; recollection; remembrance; storage
to cross over; to go across; to extend; to cover; to range
assimilation; absorption; adaptation; assimilation; anabolism; assimilation (phonology)
between the waves; in the waves; on the waves; behind the waves; beneath the waves
to leave a trail; to leave traces; to have a lasting effect
sky; the skies; high-altitude sky; upper air