小题1:His father watched a talk show last night. （对画线部分提问）
his father last night?
小题2:Did you play the piano this morning?（作肯定回答）
, I .
小题3: Gina always stays at home on weekends.（用last weekend作状语改写句子）
Gina at home last weekend.
小题4:My mother watches TV every day. (用now 作状语改写句子)
My mother TV now.
小题5: Mary is very sad because she doesn’t do well in her English.（对画线部分提问)
Mary very sad ?
小题1:What; did; do
小题2:Yes, did
小题3: stayed
小题4:is; watching
小题5:Why; is
小题1:对做某事提问用疑问词what，后跟一般疑问句，本题为过去时，用助动词did构成一般疑问句，后跟动词原形do，故本题空格处填What; did; do。
小题2:肯定回答的结构为yes，人称加引导词did，故本题空格处填Yes, did。
小题3:用上个周末改写为过去时，谓语动词改为stayed。
小题4:用now改为现在进行时，结构为be+doing，本题的主语为单数第三人称，故本题空格处填is; watching。
小题5:对于原因提问的用疑问词why，后跟一般疑问句，be动词is提前，故本题空格处填Why; is。