用sometimes，sometime，some times或some time完成下面的句子

1.-Will you stay in Beijing for __________?  

    -Yes, I will.

2. __________ he goes to school by bike and __________ by bus.

3. The museum was built __________ before 1258.

4. After __________, Mr Liu came back from abroad.

5. He has been told not to play computer games too much __________.

我国第一部论述梅毒的专书是：（）

A.《霉疮秘录》

B.《世医得效方》

C.《疡科心得集》

D.《理瀹骈文》

E.《外科全生集》