写出下列单词的相应形式。
A:例:work—works
⑴help— ______⑵give—______
⑶watch—______⑷close—______
⑸feed—______⑹dance—______
⑺have—______⑻fly—______
⑼study—______
B:例:sing—singing
⑴do—______⑵clean—______
⑶take—______⑷play—______
⑸look—______⑹swim—______
⑺get—______⑻eat—______
⑼skate—______