2001.1几道语法题求助

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37、Wampum, beads used as (a form) of exchange (by) some Native Americans, was made of (bits of ) seashells cut,(drill) and (strung into) belts.

39\Proper city planning (provides for) the (distribution) of public utilities, public buildings, parks and (recreation centers), and for adequate and (the inexpensive) housing.

psymaria

drill----drilled,平行结构
the inexpensive——inexpensive